:root{--c-bg: #ffffff;--c-bg-alt: #f5f5f7;--c-bg-dark: #000000;--c-text: #1d1d1f;--c-text-dim: #86868b;--c-text-invert: #f5f5f7;--c-accent: #0071e3;--c-accent-soft: rgba(0, 113, 227, .08);--c-accent-line: rgba(0, 113, 227, .22);--c-warn: #a85700;--c-warn-bg: rgba(255, 159, 10, .16);--c-line: rgba(0, 0, 0, .1);--c-line-dark: rgba(255, 255, 255, .14);--r-card: 18px;--r-pill: 980px;--w-text: 692px;--w-page: 1120px;--nav-pad-open: 20px;--nav-pad-collapsed: 8px;--nav-collapse-range: 110px;--nav-h-open: 66px;--nav-h: 44px}*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Helvetica Neue,PingFang SC,HarmonyOS Sans SC,Source Han Sans SC,Noto Sans CJK SC,Microsoft YaHei,sans-serif;color:var(--c-text);background:var(--c-bg);font-size:17px;line-height:1.47;letter-spacing:-.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3{font-weight:500;letter-spacing:-.01em;line-height:1.12;margin:0}p{margin:0}a{color:var(--c-accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{width:100%;max-width:var(--w-page);margin-inline:auto;padding-inline:22px}.section{padding-block:120px}.section--tight{padding-block:88px}.section--alt{background:var(--c-bg-alt)}.section--dark{background:var(--c-bg-dark);color:var(--c-text-invert)}.section--dark h2{color:#f5f5f7}.section--dark .lede{color:#a1a1a6}.eyebrow{font-size:19px;font-weight:600;color:var(--c-accent);letter-spacing:-.01em;margin-bottom:10px}.display{font-size:clamp(38px,6.4vw,76px);font-weight:600;letter-spacing:-.03em}.headline{font-size:clamp(32px,4.6vw,48px)}.lede{font-size:clamp(17px,2vw,21px);line-height:1.5;color:var(--c-text-dim);max-width:var(--w-text)}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:var(--r-pill);background:var(--c-accent);color:#fff;font-size:17px;font-weight:400;border:none;cursor:pointer;transition:background .2s ease,transform .2s ease}.btn:hover{background:#0077ed;text-decoration:none}.btn:active{transform:scale(.97)}.btn--ghost{background:transparent;color:var(--c-accent);border:1px solid var(--c-accent)}.btn--ghost:hover{background:#0071e30f}.card{background:var(--c-bg);border-radius:var(--r-card);padding:32px;border:1px solid var(--c-line)}.section--alt .card{background:#fff;border-color:transparent}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}@media(max-width:734px){.section{padding-block:80px}.section--tight{padding-block:60px}body{font-size:16px}}.js [data-anim]{opacity:0;transform:translateY(24px);will-change:opacity,transform}.split-line{overflow:hidden}.nav[data-astro-cid-dmqpwcec]{position:fixed;inset:0 0 auto;z-index:100;padding-block:var(--nav-pad-open);background:#ffffffb8;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);box-shadow:0 1px 0 transparent;transition:padding-block .28s cubic-bezier(.4,0,.2,1),box-shadow .28s cubic-bezier(.4,0,.2,1)}.nav__inner[data-astro-cid-dmqpwcec]{max-width:var(--w-page);margin-inline:auto;padding-inline:22px;display:flex;align-items:center;gap:26px}.narrow[data-astro-cid-dmqpwcec]{display:none}.nav__brand[data-astro-cid-dmqpwcec]{flex:none;font-size:var(--brand-fs, 21px);font-weight:600;color:var(--c-text);letter-spacing:-.02em;white-space:nowrap;transform-origin:left center;transition:font-size .28s cubic-bezier(.4,0,.2,1),color .2s ease}.nav__brand[data-astro-cid-dmqpwcec]:hover{color:var(--c-accent);text-decoration:none}.nav__links[data-astro-cid-dmqpwcec]{display:flex;gap:26px;margin-inline-start:8px;margin-inline-end:auto;min-width:0;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}.nav__links[data-astro-cid-dmqpwcec]::-webkit-scrollbar{display:none}.nav__links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]{font-size:14px;color:var(--c-text);opacity:.78;white-space:nowrap;transition:opacity .2s ease,color .2s ease}.ext[data-astro-cid-dmqpwcec]{font-size:10px;margin-inline-start:3px;opacity:.6}.nav__links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]:hover{opacity:1;color:var(--c-accent);text-decoration:none}.nav__links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec].is-current{opacity:1;color:var(--c-accent);box-shadow:0 2px 0 -1px currentColor}.nav__sentinel[data-astro-cid-dmqpwcec]{height:1px}@supports (animation-timeline: scroll()){.nav[data-astro-cid-dmqpwcec],.nav__brand[data-astro-cid-dmqpwcec]{animation-timeline:scroll(root block);animation-range:0 var(--nav-collapse-range);animation-fill-mode:both;animation-timing-function:linear;transition:none}.nav[data-astro-cid-dmqpwcec]{animation-name:nav-shrink}.nav__brand[data-astro-cid-dmqpwcec]{animation-name:nav-brand-shrink}}@keyframes nav-shrink{to{padding-block:var(--nav-pad-collapsed);box-shadow:0 1px 0 var(--c-line)}}@keyframes nav-brand-shrink{to{font-size:var(--brand-fs-collapsed, 15px)}}.nav[data-astro-cid-dmqpwcec].is-collapsed{padding-block:var(--nav-pad-collapsed);box-shadow:0 1px 0 var(--c-line)}.nav[data-astro-cid-dmqpwcec].is-collapsed .nav__brand[data-astro-cid-dmqpwcec]{font-size:var(--brand-fs-collapsed, 15px)}@media(max-width:1180px){.nav[data-astro-cid-dmqpwcec]{--brand-fs: 19px}.nav__brand[data-astro-cid-dmqpwcec] .wide[data-astro-cid-dmqpwcec]{display:none}.nav__brand[data-astro-cid-dmqpwcec] .narrow[data-astro-cid-dmqpwcec]{display:inline}.nav__cta[data-astro-cid-dmqpwcec] .wide[data-astro-cid-dmqpwcec]{display:none}.nav__cta[data-astro-cid-dmqpwcec] .narrow[data-astro-cid-dmqpwcec]{display:inline}}@media(max-width:900px){.nav__links[data-astro-cid-dmqpwcec]{gap:18px}.nav__links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]{font-size:13px}.nav[data-astro-cid-dmqpwcec]{--brand-fs: 18px;--brand-fs-collapsed: 14px}}@media(max-width:560px){.nav__links[data-astro-cid-dmqpwcec]{overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;margin-inline-start:0;gap:14px}.nav__links[data-astro-cid-dmqpwcec]::-webkit-scrollbar{display:none}.nav__links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]{font-size:13px}.nav__inner[data-astro-cid-dmqpwcec]{gap:12px;padding-inline:16px}.nav[data-astro-cid-dmqpwcec]{--brand-fs: 17px;--brand-fs-collapsed: 14px}.nav__links[data-astro-cid-dmqpwcec] .wide[data-astro-cid-dmqpwcec]{display:none}.nav__links[data-astro-cid-dmqpwcec] .narrow[data-astro-cid-dmqpwcec]{display:inline}}@media(prefers-reduced-motion:reduce){.nav[data-astro-cid-dmqpwcec],.nav__brand[data-astro-cid-dmqpwcec]{animation:none!important;transition:none!important}}.lang[data-astro-cid-dmqpwcec]{position:relative;flex:none;z-index:1;margin-inline-start:18px}.lang[data-astro-cid-dmqpwcec]>summary[data-astro-cid-dmqpwcec]{list-style:none;cursor:pointer;display:flex;align-items:center;gap:5px;font-size:13px;font-weight:500;color:var(--c-text);opacity:.78;white-space:nowrap;user-select:none;transition:opacity .2s ease,color .2s ease}.lang[data-astro-cid-dmqpwcec]>summary[data-astro-cid-dmqpwcec]::-webkit-details-marker{display:none}.lang[data-astro-cid-dmqpwcec]>summary[data-astro-cid-dmqpwcec]:hover{opacity:1;color:var(--c-accent)}.lang__caret[data-astro-cid-dmqpwcec]{font-size:9px;opacity:.6}.lang__globe[data-astro-cid-dmqpwcec]{width:17px;height:17px;flex:none}.lang__menu[data-astro-cid-dmqpwcec]{position:absolute;inset-inline-end:0;top:calc(100% + 10px);min-width:132px;list-style:none;margin:0;padding:6px;border-radius:12px;background:#ffffffeb;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);box-shadow:0 8px 30px #0000001f,0 0 0 1px var(--c-line)}.lang__menu[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]{display:block;padding:7px 10px;border-radius:8px;font-size:13px;color:var(--c-text);white-space:nowrap}.lang__menu[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]:hover{background:var(--c-bg-alt);text-decoration:none}.lang__menu[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec].is-cur{color:var(--c-accent);font-weight:600}@media(max-width:560px){.lang[data-astro-cid-dmqpwcec]{margin-inline-start:10px}.lang__code[data-astro-cid-dmqpwcec],.lang__caret[data-astro-cid-dmqpwcec]{display:none}.lang__globe[data-astro-cid-dmqpwcec]{width:19px;height:19px}}.nav__cta[data-astro-cid-dmqpwcec]{flex:none;margin-left:4px;padding:7px 16px;border-radius:999px;background:var(--c-accent);color:#fff;font-size:13px;font-weight:600;letter-spacing:-.01em;text-decoration:none;white-space:nowrap;transition:filter .2s ease}.nav__cta[data-astro-cid-dmqpwcec]:hover{filter:brightness(1.1)}@media(max-width:900px){.nav__cta[data-astro-cid-dmqpwcec]{padding:6px 12px;font-size:12px}}.lb[data-astro-cid-gixpweiw]{position:fixed;inset:0;z-index:200;display:grid;place-items:center;opacity:0;transition:opacity .28s ease}.lb[data-astro-cid-gixpweiw][hidden]{display:none}.lb[data-astro-cid-gixpweiw].is-open{opacity:1}.lb__scrim[data-astro-cid-gixpweiw]{position:absolute;inset:0;background:#000000d1;-webkit-backdrop-filter:saturate(150%) blur(20px);backdrop-filter:saturate(150%) blur(20px)}.lb__bar[data-astro-cid-gixpweiw]{position:absolute;top:0;left:0;right:0;z-index:2;display:flex;align-items:center;gap:16px;padding:16px 18px;background:linear-gradient(to bottom,rgba(0,0,0,.5),transparent);pointer-events:none}.lb__cap[data-astro-cid-gixpweiw]{flex:1;min-width:0;font-size:14px;line-height:1.4;color:#ffffffe6;display:flex;align-items:baseline;gap:10px}.lb__cap-t[data-astro-cid-gixpweiw]{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lb__count[data-astro-cid-gixpweiw]{flex:none;font-size:12px;color:#ffffff8c;font-variant-numeric:tabular-nums}.lb__btn[data-astro-cid-gixpweiw]{pointer-events:auto;display:grid;place-items:center;width:40px;height:40px;flex:none;border:none;border-radius:50%;background:#ffffff24;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);color:#fff;cursor:pointer;transition:background .2s ease,transform .2s ease,opacity .2s ease}.lb__btn[data-astro-cid-gixpweiw]:hover{background:#ffffff42}.lb__btn[data-astro-cid-gixpweiw]:active{transform:scale(.92)}.lb__btn[data-astro-cid-gixpweiw] svg[data-astro-cid-gixpweiw]{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.lb__nav[data-astro-cid-gixpweiw]{position:absolute;z-index:2;top:50%;transform:translateY(-50%);width:46px;height:46px}.lb__nav[data-astro-cid-gixpweiw]:active{transform:translateY(-50%) scale(.92)}.lb__nav--prev[data-astro-cid-gixpweiw]{left:18px}.lb__nav--next[data-astro-cid-gixpweiw]{right:18px}.lb[data-astro-cid-gixpweiw].is-single .lb__nav[data-astro-cid-gixpweiw]{display:none}.lb__stage[data-astro-cid-gixpweiw]{position:relative;width:min(94vw,1400px);height:min(86vh,1000px);display:grid;place-items:center;overflow:hidden;touch-action:none}.lb__img[data-astro-cid-gixpweiw]{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 22px 60px rgba(0,0,0,.55));cursor:zoom-in;transform:scale(.96);opacity:0;transition:opacity .3s ease,transform .34s cubic-bezier(.2,.8,.24,1);user-select:none;-webkit-user-drag:none}.lb__img[data-astro-cid-gixpweiw].is-in{opacity:1;transform:scale(1)}.lb[data-astro-cid-gixpweiw].is-zoom .lb__img[data-astro-cid-gixpweiw]{cursor:grab}.lb[data-astro-cid-gixpweiw].is-zoom.is-drag .lb__img[data-astro-cid-gixpweiw]{cursor:grabbing;transition:none}.lb__hint[data-astro-cid-gixpweiw]{position:absolute;bottom:18px;left:50%;transform:translate(-50%);font-size:12px;color:#ffffff73;pointer-events:none}@media(max-width:734px){.lb__stage[data-astro-cid-gixpweiw]{width:100vw;height:78vh}.lb__nav--prev[data-astro-cid-gixpweiw]{left:8px}.lb__nav--next[data-astro-cid-gixpweiw]{right:8px}.lb__nav[data-astro-cid-gixpweiw]{width:40px;height:40px}.lb__hint[data-astro-cid-gixpweiw]{display:none}}@media(prefers-reduced-motion:reduce){.lb[data-astro-cid-gixpweiw],.lb__img[data-astro-cid-gixpweiw]{transition:none}}.fab[data-astro-cid-pkx7jx7d]{position:fixed;right:20px;bottom:24px;z-index:60;display:flex;flex-direction:column;align-items:flex-end;gap:12px}.fab__btn[data-astro-cid-pkx7jx7d]{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border:1px solid var(--c-accent-line);border-radius:999px;background:var(--c-bg);color:var(--c-accent);font:inherit;font-size:14px;font-weight:600;cursor:pointer;box-shadow:0 6px 24px #0000001a;transition:transform .2s ease,box-shadow .2s ease}.fab__btn[data-astro-cid-pkx7jx7d]:hover{transform:translateY(-2px);box-shadow:0 10px 30px #00000024}.fab__btn[data-astro-cid-pkx7jx7d] svg[data-astro-cid-pkx7jx7d]{width:20px;height:20px;flex:none}.fab__panel[data-astro-cid-pkx7jx7d]{position:relative;width:216px;padding:16px 16px 14px;border-radius:18px;background:var(--c-bg);box-shadow:0 14px 44px #0000002e;text-align:center}.fab__panel[data-astro-cid-pkx7jx7d][hidden]{display:none}.fab__panel[data-astro-cid-pkx7jx7d] img[data-astro-cid-pkx7jx7d]{width:100%;height:auto;display:block;border-radius:10px;background:#fff;padding:8px;image-rendering:pixelated}.fab__cap[data-astro-cid-pkx7jx7d]{margin-top:10px;font-size:13px;color:var(--c-text-dim)}.fab__close[data-astro-cid-pkx7jx7d]{position:absolute;top:6px;right:8px;width:26px;height:26px;border:0;border-radius:50%;background:transparent;color:var(--c-text-dim);font-size:20px;line-height:1;cursor:pointer}@media(max-width:734px){.fab[data-astro-cid-pkx7jx7d]{right:12px;bottom:16px}.fab__label[data-astro-cid-pkx7jx7d]{display:none}.fab__btn[data-astro-cid-pkx7jx7d]{padding:12px;border-radius:50%}.fab__panel[data-astro-cid-pkx7jx7d]{width:min(70vw,216px)}}@media(prefers-reduced-motion:reduce){.fab__btn[data-astro-cid-pkx7jx7d]{transition:none}}.foot[data-astro-cid-5hce7sga]{background:var(--c-bg-alt);padding-block:36px;border-top:1px solid var(--c-line)}.foot__disclaim[data-astro-cid-5hce7sga]{font-size:12px;line-height:1.65;color:var(--c-text-dim);max-width:760px}.foot__mail[data-astro-cid-5hce7sga]{margin-top:12px;font-size:13px}.foot__mail[data-astro-cid-5hce7sga] a[data-astro-cid-5hce7sga]{color:var(--c-accent);text-decoration:none}.foot__mail[data-astro-cid-5hce7sga] a[data-astro-cid-5hce7sga]:hover{text-decoration:underline}