:root{--bg:#070a12;--bg-2:#0b1020;--surface:#0f1526;--surface-2:#151c31;--surface-app:#17191f;--line:#ffffff17;--line-2:#ffffff2b;--text:#f4f6fb;--muted:#a1abc0;--faint:#727d94;--blue:#4d8dff;--blue-2:#80b0ff;--blue-btn-top:#2f6df0;--blue-btn-bottom:#2152cf;--violet:#8b7bff;--green:#3ad29f;--amber:#f1b84a;--l-bg:#f3f4f8;--l-text:#0b1121;--l-muted:#475169;--l-line:#0b11211a;--l-accent:#2f66d6;--font:-apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace;--fs-h1:clamp(2.7rem, 1.35rem + 6.4vw, 6.4rem);--fs-h2:clamp(1.9rem, 1.25rem + 2.7vw, 3.55rem);--fs-lead:clamp(1.05rem, .98rem + .38vw, 1.27rem);--fs-body:1rem;--fs-small:.875rem;--fs-tiny:.8rem;--pad:clamp(1.25rem, 4.2vw, 2.5rem);--section:clamp(4.5rem, 3rem + 7vw, 9rem);--gap-s:.5rem;--gap-m:1rem;--gap-l:clamp(1.5rem, 4vw, 3.5rem);--radius-s:8px;--radius:16px;--radius-l:22px;--radius-pill:999px;--shadow-card:0 30px 60px -20px #000000b3;--shadow-window:0 50px 80px -30px #000000b3, 0 14px 30px -10px #00000080, 0 0 0 1px #ffffff0f;--shadow-window-hero:0 70px 110px -40px #1e46c88c, 0 24px 40px -14px #0009, 0 0 0 1px #ffffff14;--shadow-window-light:0 50px 70px -30px #141e4659, 0 14px 26px -10px #141e4640, 0 0 0 1px #0b112114;--w-page:1200px;--w-stage:1240px;--header-h:64px;--ease:cubic-bezier(.2, .7, .2, 1);--dur-fast:.2s;--dur:.35s;--dur-slow:.8s}@keyframes rise{0%{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}@keyframes fade{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes wave{0%,to{transform:scaleY(calc(var(--h,.4) * .35))}50%{transform:scaleY(var(--h,.4))}}@keyframes ping{70%{box-shadow:0 0 0 7px #3ad29f00}to{box-shadow:0 0 #3ad29f00}}@keyframes meter{0%,to{width:18%}40%{width:62%}70%{width:34%}}.rise{animation:rise .9s var(--ease) both;animation-delay:var(--d,0s)}.js .reveal{opacity:0;transition:opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);transition-delay:var(--rd,0s);transform:translateY(18px)}.js .reveal.is-in{opacity:1;transform:none}.wave{justify-content:center;align-items:center;gap:3px;display:flex}.wave i{background:linear-gradient(180deg, var(--blue-2), var(--violet));min-width:2px;max-width:6px;height:100%;transform:scaleY(var(--h,.4));transform-origin:50%;animation:1.7s ease-in-out infinite wave;animation-delay:calc(var(--i,0) * -85ms);opacity:.8;border-radius:99px;flex:1 1 0;display:block}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}.rise{opacity:1;transform:none;animation:none!important}.js .reveal{opacity:1;transform:none}.wave i{transform:scaleY(var(--h,.4));animation:none}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 16px)}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{background:var(--bg);color:var(--text);font:400 var(--fs-body) / 1.6 var(--font);letter-spacing:-.005em;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;overflow-x:clip}img,picture{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration-color:color-mix(in srgb, currentColor 35%, transparent);text-underline-offset:.2em}a:hover{text-decoration-color:currentColor}h1,h2,h3,p,ul,ol,dl,dd,figure,blockquote{margin:0}ul,ol{padding:0;list-style:none}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--blue-2);outline-offset:3px;border-radius:6px}::selection{background:#4d8dff66}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.skip-link{z-index:100;color:#000;background:#fff;border-radius:10px;padding:.6rem 1rem;font-weight:600;transition:top .2s;position:fixed;top:-60px;left:12px}.skip-link:focus{top:12px}.wrap{width:100%;max-width:var(--w-page);padding-inline:var(--pad);margin-inline:auto}kbd{font:500 .8em / 1 var(--mono);border:1px solid var(--line-2);color:var(--text);white-space:nowrap;background:#ffffff14;border-bottom-width:2px;border-radius:6px;padding:.22em .5em}.section{padding-block:var(--section);position:relative}.section--light{background:var(--l-bg);color:var(--l-text)}.section--light kbd{color:var(--l-text);background:#fff;border-color:#0b11212e}.section-head{max-width:760px}.section-head--center{text-align:center;margin-inline:auto}.split{grid-template-columns:minmax(0,5fr) minmax(0,6.5fr);align-items:center;gap:clamp(2rem,6vw,6rem);display:grid}.split--flip{grid-template-columns:minmax(0,6fr) minmax(0,5fr)}.split--flip>.split__visual{order:-1}@media (width<=920px){.split,.split--flip{grid-template-columns:minmax(0,1fr)}.split--flip>.split__visual{order:0}}.lead{font-size:var(--fs-lead);color:var(--muted);text-wrap:pretty;max-width:56ch;margin-top:1.4rem;line-height:1.55}.section--light .lead{color:var(--l-muted)}.fineprint{font-size:var(--fs-small);color:var(--faint);max-width:62ch;margin-top:1.4rem;line-height:1.55}.fineprint--center{text-align:center;margin-inline:auto}.caption{font-size:var(--fs-tiny);color:var(--faint);margin-top:.9rem}.caption--center{text-align:center;margin-top:1.4rem}.caption--dark{color:var(--l-muted)}.grad{background:linear-gradient(100deg,#fff 5%,#a9c8ff 45%,#8b7bff 95%);color:#0000;-webkit-background-clip:text;background-clip:text}.ticks{gap:.8rem;margin-top:1.8rem;display:grid}.ticks li{padding-left:1.9rem;line-height:1.5;position:relative}.ticks li:before{content:"";background:radial-gradient(circle at 30% 30%,#8bb8ff,#3f7bf2);border-radius:50%;width:1.05rem;height:1.05rem;position:absolute;top:.42em;left:0;box-shadow:0 0 0 4px #4d8dff24}.ticks li:after{content:"";border-bottom:2px solid #fff;border-left:2px solid #fff;width:.38rem;height:.22rem;position:absolute;top:calc(.42em + .27rem);left:.33rem;transform:rotate(-45deg)}.glow{filter:blur(90px);opacity:.55;pointer-events:none;border-radius:50%;position:absolute}.glow--blue{background:radial-gradient(closest-side,#3d76ffbf,#0000);width:min(900px,90vw);height:520px;top:14%;left:50%;transform:translate(-62%)}.glow--violet{background:radial-gradient(closest-side,#8068ff80,#0000);width:min(760px,80vw);height:460px;top:22%;left:50%;transform:translate(-8%)}.prose{max-width:70ch}.prose h2{letter-spacing:-.025em;margin-top:2.6rem;font-size:clamp(1.3rem,1.1rem + .8vw,1.75rem);line-height:1.2}.prose p,.prose li{color:var(--muted);margin-top:.9rem}.prose ul{padding-left:1.3rem;list-style:outside}.prose a{color:var(--blue-2)}html[lang=vi] .h2{max-width:calc(var(--measure) * 1.5);line-height:1.14}html[lang=vi] h1,html[lang=vi] .title{line-height:1.08}.btn[data-astro-cid-j6ocf6pu]{border-radius:var(--radius-pill);cursor:pointer;white-space:nowrap;min-height:44px;transition:transform var(--dur) var(--ease), background var(--dur), box-shadow var(--dur), border-color var(--dur);border:1px solid #0000;justify-content:center;align-items:center;gap:.5rem;padding:.7rem 1.35rem;font-size:.96rem;font-weight:600;text-decoration:none;display:inline-flex}.btn--small[data-astro-cid-j6ocf6pu]{min-height:36px;padding:.45rem 1rem;font-size:.88rem}.btn--large[data-astro-cid-j6ocf6pu]{min-height:52px;padding:.85rem 1.7rem;font-size:1.04rem}.btn--primary[data-astro-cid-j6ocf6pu]{color:#fff;background:linear-gradient(180deg, var(--blue-btn-top), var(--blue-btn-bottom));box-shadow:inset 0 1px #ffffff59,0 8px 28px -8px #2f6df0bf}.btn--primary[data-astro-cid-j6ocf6pu]:hover{transform:translateY(-1px);box-shadow:inset 0 1px #ffffff59,0 12px 34px -8px #2f6df0e6}.btn--primary[data-astro-cid-j6ocf6pu]:active{transform:translateY(0)}.btn--ghost[data-astro-cid-j6ocf6pu]{color:var(--text);border-color:var(--line-2);background:#ffffff0d}.btn--ghost[data-astro-cid-j6ocf6pu]:hover{background:#ffffff1a;transform:translateY(-1px)}.toggle[data-astro-cid-imidouvt]{cursor:pointer;background:0 0;border:0;border-radius:12px;width:44px;height:44px;display:none;position:relative}.bars[data-astro-cid-imidouvt] span[data-astro-cid-imidouvt]{background:var(--text);height:2px;transition:transform var(--dur) var(--ease), top var(--dur) var(--ease);border-radius:2px;position:absolute;left:12px;right:12px}.bars[data-astro-cid-imidouvt] span[data-astro-cid-imidouvt]:first-child{top:18px}.bars[data-astro-cid-imidouvt] span[data-astro-cid-imidouvt]:last-child{top:25px}.site-header.is-open .bars[data-astro-cid-imidouvt] span[data-astro-cid-imidouvt]:first-child{top:21.5px;transform:rotate(45deg)}.site-header.is-open .bars[data-astro-cid-imidouvt] span[data-astro-cid-imidouvt]:last-child{top:21.5px;transform:rotate(-45deg)}@media (width<=820px){.toggle[data-astro-cid-imidouvt]{display:block}}.site-header[data-astro-cid-q3uyxffx]{z-index:50;height:var(--header-h);transition:background var(--dur), border-color var(--dur), backdrop-filter var(--dur);border-bottom:1px solid #0000;position:fixed;inset:0 0 auto}.site-header[data-astro-cid-q3uyxffx].is-scrolled,.site-header[data-astro-cid-q3uyxffx].is-open{backdrop-filter:saturate(160%)blur(18px);border-bottom-color:var(--line);background:#070a12b8}.bar[data-astro-cid-q3uyxffx]{justify-content:space-between;align-items:center;gap:1rem;height:100%;display:flex}.brand[data-astro-cid-q3uyxffx]{letter-spacing:-.02em;align-items:center;gap:.6rem;font-weight:650;text-decoration:none;display:inline-flex}.brand[data-astro-cid-q3uyxffx] .brand__icon{border-radius:8px}.brand__name[data-astro-cid-q3uyxffx]{font-size:1.08rem}.nav[data-astro-cid-q3uyxffx]{align-items:center;gap:1.6rem;display:flex}.nav__list[data-astro-cid-q3uyxffx]{gap:1.5rem;display:flex}.nav__list[data-astro-cid-q3uyxffx] a[data-astro-cid-q3uyxffx]{color:var(--muted);transition:color var(--dur-fast);padding:.7rem 0;font-size:.92rem;text-decoration:none}.nav__list[data-astro-cid-q3uyxffx] a[data-astro-cid-q3uyxffx]:hover{color:var(--text)}.lang[data-astro-cid-q3uyxffx]{color:var(--muted);border:1px solid var(--line-2);border-radius:var(--radius-pill);align-items:center;min-height:36px;padding:.55rem .8rem;font-size:.88rem;text-decoration:none;display:inline-flex}.lang[data-astro-cid-q3uyxffx]:hover{color:var(--text);background:#ffffff0f}@media (width<=820px){.nav[data-astro-cid-q3uyxffx]{inset:var(--header-h) 0 auto 0;padding:.5rem var(--pad) 1.5rem;backdrop-filter:blur(22px);border-bottom:1px solid var(--line);visibility:hidden;opacity:0;transition:opacity .25s, transform var(--dur) var(--ease), visibility 0s .3s;background:#070a12f0;flex-direction:column;align-items:stretch;gap:0;position:fixed;transform:translateY(-8px)}.site-header[data-astro-cid-q3uyxffx].is-open .nav[data-astro-cid-q3uyxffx]{visibility:visible;opacity:1;transition-delay:0s;transform:none}.nav__list[data-astro-cid-q3uyxffx]{flex-direction:column;gap:0}.nav__list[data-astro-cid-q3uyxffx] a[data-astro-cid-q3uyxffx]{color:var(--text);border-bottom:1px solid var(--line);padding:.95rem 0;font-size:1.1rem;display:block}.lang[data-astro-cid-q3uyxffx]{justify-content:center;min-height:48px;margin-top:1rem;font-size:1rem}.nav[data-astro-cid-q3uyxffx] .nav__cta{min-height:48px;margin-top:1.1rem;font-size:1rem}}.footer[data-astro-cid-oenwriqq]{border-top:1px solid var(--line);padding-top:clamp(2.5rem,5vw,4rem)}.grid[data-astro-cid-oenwriqq]{grid-template-columns:1.6fr 1fr 1fr;gap:2rem;display:grid}.brand[data-astro-cid-oenwriqq]{letter-spacing:-.02em;align-items:center;gap:.6rem;font-weight:650;text-decoration:none;display:inline-flex}.brand[data-astro-cid-oenwriqq] .brand__icon{border-radius:8px}.brandcol[data-astro-cid-oenwriqq] p[data-astro-cid-oenwriqq]{color:var(--faint);margin-top:.9rem;font-size:.92rem}.h[data-astro-cid-oenwriqq]{letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:.9rem;font-size:.75rem;font-weight:650}.col[data-astro-cid-oenwriqq] ul[data-astro-cid-oenwriqq]{gap:.55rem;display:grid}.col[data-astro-cid-oenwriqq] a[data-astro-cid-oenwriqq]{color:var(--muted);font-size:.94rem;text-decoration:none}.col[data-astro-cid-oenwriqq] a[data-astro-cid-oenwriqq]:hover{color:var(--text)}.legal[data-astro-cid-oenwriqq]{border-top:1px solid var(--line);color:var(--faint);margin-top:clamp(2rem,4vw,3rem);padding-block:1.5rem 2.2rem;font-size:.8rem}@media (width<=640px){.grid[data-astro-cid-oenwriqq]{grid-template-columns:1fr 1fr}.brandcol[data-astro-cid-oenwriqq]{grid-column:1/-1}}