:root{
  --bg:#FAF1E4;--bg-top:#FDF8EF;--bg-bottom:#F3E7D4;--panel:#FFFAF2;--panel-2:#F2E6D3;--border:#E6D5BC;
  --accent:#6C47F5;--accent-dark:#4E2FCB;--grape-hi:#A993FF;--coral:#FF7C7A;--coral-hi:#FFC3B5;--coral-dk:#DF525B;
  --mint:#4CC796;--mint-hi:#C4F2DC;--mint-tint:#E0F5EB;--honey:#F7A93B;--honey-hi:#FFDD95;
  --text:#2B1F16;--muted:#6F5D4C;--success:#2E9E6F;--warn:#D98612;--error:#D2453A;--white:#FFFFFF;
  --bezel-hi:#F6EBDB;--bezel:#E4D0B3;--bezel-edge:#C9AE88;--deck-top:#EFE1CB;--deck-bottom:#CBB18D;
  --flag-red:#DA3B34;--flag-blue:#2E3C8C;--flag-white:#FFFFFF;
  --accent-a08:rgba(108,71,245,.08);--accent-a12:rgba(108,71,245,.12);--accent-a22:rgba(108,71,245,.22);--accent-a40:rgba(108,71,245,.40);
  --coral-a35:rgba(255,124,122,.35);--ink-a04:rgba(43,31,22,.04);--ink-a08:rgba(43,31,22,.08);--ink-a12:rgba(43,31,22,.12);
  --ink-a18:rgba(43,31,22,.18);--ink-a28:rgba(43,31,22,.28);--ink-a45:rgba(43,31,22,.45);
  --white-a18:rgba(255,255,255,.18);--white-a30:rgba(255,255,255,.30);--white-a55:rgba(255,255,255,.55);--white-a80:rgba(255,255,255,.80);
  --blob-grape:rgba(108,71,245,.24);--blob-coral:rgba(255,124,122,.28);--grain:rgba(43,31,22,.03);--clear:transparent;
  --font-display:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans','Malgun Gothic','Microsoft YaHei',sans-serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans','Apple SD Gothic Neo','Malgun Gothic','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --weight-body:400;--weight-medium:600;--weight-bold:700;--weight-heavy:800;--weight-display:900;
  --fs-micro:10.5px;--fs-mini:11.5px;--fs-xs:12px;--fs-sm:13px;--fs-badge:13.5px;--fs-label:14px;--fs-nav:15px;
  --fs-body:16px;--fs-lede:17px;--fs-subtitle:19px;--fs-brand:21px;--fs-price:26px;
  --fs-h1:clamp(52px,4.6vw,66px);--fs-h2:clamp(28px,3vw,40px);--fs-h3:24px;--fs-mobile-h1:clamp(28px,7.8vw,40px);
  --r-xl:36px;--r-lg:28px;--r-md:24px;--r-sm:16px;--r-xs:12px;--r-tiny:8px;--r-mark:4px;--r-pixel:2px;--r-pill:999px;--r-circle:50%;
  --r-lid:30px 30px 12px 12px;--r-window:20px;--r-now:22px;--r-phone:34px;--r-screen:27px;--r-pack:18px;
  --r-deck:3px 3px 20px 20px;--r-notch:0 0 8px 8px;
  --gutter:24px;--wrap-max:1368px;--header-height:76px;--anchor-offset:96px;--toc-offset:160px;
  --ease: .2s ease;--reveal-time:.35s;
  --shadow-panel:inset 0 1px 0 var(--white),0 0 0 1px var(--border),0 40px 80px -28px var(--accent-a12),0 12px 24px -16px var(--accent-a22);
  --shadow-float:inset 0 1px 0 var(--white),0 0 0 1px var(--border),0 22px 40px -18px var(--accent-a22);
  --gradient-key:linear-gradient(95deg,var(--accent) 8%,var(--coral) 96%);
  --gradient-action:linear-gradient(180deg,var(--grape-hi) -60%,var(--accent) 55%,var(--accent-dark) 140%);
  --gradient-candy:linear-gradient(132deg,var(--accent),var(--grape-hi) 52%,var(--coral));
  --gradient-mint:linear-gradient(135deg,var(--mint-hi),var(--honey-hi));
  --gradient-coral:linear-gradient(135deg,var(--coral-hi),var(--grape-hi));
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:var(--anchor-offset);scroll-behavior:smooth}
body{margin:0;font-family:var(--font-body);font-size:var(--fs-body);font-weight:var(--weight-body);line-height:1.7;color:var(--text);background-color:var(--bg);background-image:radial-gradient(var(--grain) .7px,var(--clear) .9px),radial-gradient(var(--grain) .6px,var(--clear) .8px);background-size:4px 4px,7px 7px;background-position:0 0,2px 3px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button,a,summary{-webkit-tap-highlight-color:var(--accent-a12)}
button{border:0}
img,svg{vertical-align:middle}
img{max-width:100%;height:auto}
svg{flex-shrink:0}
[hidden]{display:none!important}
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--accent-dark);outline-offset:4px}
h1,h2,h3{font-family:var(--font-display);font-weight:var(--weight-display);line-height:1.2;text-wrap:balance;overflow-wrap:break-word}
h1{font-size:var(--fs-h1);letter-spacing:-.02em}
h2{font-size:var(--fs-h2);letter-spacing:-.02em}
h3{font-size:var(--fs-h3)}
p{margin:0 0 1.2em}
code,kbd,pre{font-family:var(--font-mono)}
code{overflow-wrap:anywhere;font-size:var(--fs-label);background:var(--panel-2);border-radius:var(--r-mark);padding:2px 5px}
pre{max-width:100%;overflow-x:auto;padding:20px;border-radius:var(--r-sm);background:var(--panel-2)}
pre code{padding:0;white-space:pre;overflow-wrap:normal}
.wrap{width:100%;max-width:var(--wrap-max);margin:0 auto;padding-inline:var(--gutter)}
.section{padding-top:80px;padding-bottom:80px}
.reading-wrap{max-width:920px}
.prose{min-width:0;overflow-wrap:break-word}
.prose p,.prose li{line-height:1.9}
.prose h2{margin-top:2em}
.prose h3{margin-top:1.6em}
.prose a:not(.btn){color:var(--accent-dark);text-decoration:underline;text-underline-offset:4px}
.prose li+li{margin-top:8px}
.no-break{white-space:nowrap}
.muted{color:var(--muted)}
.mono{font-family:var(--font-mono)}
.grad{background:var(--gradient-key);-webkit-background-clip:text;background-clip:text;color:var(--clear);-webkit-text-fill-color:var(--clear)}
.svg-defs{position:absolute;width:0;height:0;overflow:hidden}
.panel,.card{min-width:0;padding:28px;border-radius:var(--r-lg);background:var(--panel);box-shadow:var(--shadow-panel)}
.panel-inset{min-width:0;padding:24px;background:var(--panel-2);border-radius:var(--r-md);box-shadow:inset 0 2px 5px var(--ink-a08),inset 0 -1px 0 var(--white-a80)}
.grid-three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-five{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.grid-three>*,.grid-five>*{min-width:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:12px 28px;border:0;border-radius:var(--r-pill);font-family:var(--font-body);font-size:var(--fs-body);font-weight:var(--weight-heavy);letter-spacing:-.005em;line-height:1.35;flex-shrink:0;white-space:nowrap;transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--gradient-action);color:var(--white);box-shadow:inset 0 1px 0 var(--white-a30),0 18px 36px -14px var(--accent-a40)}
.btn-ghost,.btn-secondary{background:var(--white);color:var(--text);box-shadow:inset 0 0 0 1px var(--border),0 14px 30px -16px var(--ink-a28)}
.btn-ghost svg{color:var(--accent)}
.btn-small{min-height:44px;padding:10px 18px;font-size:var(--fs-label)}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--panel-2);color:var(--muted);box-shadow:inset 0 0 0 1px var(--border);cursor:not-allowed;transform:none}
.cta-row{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:32px}
#site-header{position:relative;z-index:50;min-height:var(--header-height)}
.nav{position:relative;z-index:50;height:var(--header-height);display:flex;align-items:center;gap:40px;flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;font-family:var(--font-display);font-weight:var(--weight-display);font-size:var(--fs-brand);letter-spacing:-.02em;color:var(--text);white-space:nowrap}
.brand img{width:38px;height:38px;flex-shrink:0}
.brand-zh{font-weight:var(--weight-medium);color:var(--muted)}
.desktop-nav{flex:1;min-width:0}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-links a,.more summary{display:flex;align-items:center;gap:6px;min-height:40px;padding:0 14px;border-radius:var(--r-pill);font-size:var(--fs-nav);font-weight:var(--weight-medium);color:var(--text);cursor:pointer;white-space:nowrap;transition:background-color var(--ease),color var(--ease)}
.nav-links a:hover,.more summary:hover{background:var(--white-a55)}
.nav-links a[aria-current="page"],.more summary.is-current{color:var(--accent-dark);background:var(--accent-a08);font-weight:var(--weight-heavy)}
.more{position:relative}
.more summary{list-style:none}
.more summary::-webkit-details-marker{display:none}
.more summary svg{transition:transform var(--ease)}
.more[open] summary svg{transform:rotate(180deg)}
.more-menu{position:absolute;z-index:65;top:calc(100% + 8px);left:0;min-width:184px;margin:0;padding:8px;list-style:none;background:var(--panel);border-radius:var(--r-md);box-shadow:var(--shadow-float)}
.more:not([open]) .more-menu{display:none}
.more-menu a{min-height:40px;border-radius:var(--r-xs)}
.nav-end{margin-left:auto;display:flex;align-items:center;gap:12px;flex-shrink:0}
.lang-picker{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;min-width:44px;width:auto;padding:0 14px;border:0;border-radius:var(--r-pill);background:var(--white-a55);box-shadow:inset 0 0 0 1px var(--border);font-family:var(--font-body);font-size:var(--fs-label);font-weight:var(--weight-medium);color:var(--text);cursor:pointer;white-space:nowrap}
.lang span{white-space:nowrap}
.lang svg{color:var(--muted)}
.lang-panel{position:absolute;z-index:70;top:calc(100% + 10px);right:0;min-width:180px;padding:8px;background:var(--panel);border-radius:var(--r-sm);box-shadow:var(--shadow-float)}
.lang-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:var(--r-xs);font-size:var(--fs-label)}
.lang-panel a:hover,.lang-panel a[aria-current="true"]{background:var(--accent-a08);color:var(--accent-dark)}
.login{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 24px;border-radius:var(--r-pill);background:var(--text);color:var(--panel);font-size:var(--fs-nav);font-weight:var(--weight-heavy);white-space:nowrap;box-shadow:inset 0 1px 0 var(--white-a18),0 10px 22px -12px var(--ink-a45);transition:transform var(--ease)}
.login:hover{transform:translateY(-1px)}
.hamburger{display:none;align-items:center;justify-content:center;flex-direction:column;gap:5px;min-width:44px;min-height:44px;padding:10px;border-radius:var(--r-xs);background:var(--panel);color:var(--text);box-shadow:inset 0 0 0 1px var(--border)}
.hamburger-line{display:block;width:20px;height:2px;background:currentColor;border-radius:var(--r-pixel)}
.nav-drawer{display:none;position:fixed;z-index:49;top:var(--header-height);left:0;right:0;height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));padding:20px var(--gutter) 40px;background:var(--panel);overflow-y:auto;overscroll-behavior:contain}
.nav-drawer a{display:flex;align-items:center;width:100%;min-height:48px;padding:12px 16px;border-radius:var(--r-xs);font-weight:var(--weight-bold)}
.nav-drawer a:hover,.nav-drawer a[aria-current]{background:var(--accent-a08);color:var(--accent-dark)}
.drawer-languages{border-top:1px solid var(--border);margin-top:20px;padding-top:12px}
.nav-veil{display:none;position:fixed;z-index:48;inset:var(--header-height) 0 0;background:var(--ink-a28);border:0}
html.nav-open{overflow:hidden}
.footer{margin-top:64px;padding-top:56px;padding-bottom:24px;border-top:1px solid var(--border);background:var(--panel-2)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px}
.footer-grid>*{min-width:0}
.footer-intro{margin-top:20px;max-width:360px;color:var(--muted);font-size:var(--fs-label)}
.footer-title{margin:0 0 12px;font-size:var(--fs-body);font-weight:var(--weight-heavy)}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.footer-links a,.footer-languages a,.footer-legal a{display:inline-flex;align-items:center;min-height:32px;font-size:var(--fs-label)}
.footer-links a:hover,.footer-languages a:hover,.footer-legal a:hover{color:var(--accent-dark);text-decoration:underline;text-underline-offset:4px}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:32px;padding-top:24px;border-top:1px solid var(--border)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:24px;color:var(--muted);font-size:var(--fs-sm)}
.footer-legal{display:flex;flex-wrap:wrap;gap:20px}
.reveal{transition:opacity var(--reveal-time) ease,transform var(--reveal-time) ease}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{display:block;position:relative;min-width:0;max-width:100%;min-height:120px;overflow:hidden;margin-top:24px;margin-bottom:32px}
#server-status+*{margin-top:32px}
[data-counter]{display:inline-block;min-width:3ch;font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right}
.stage{position:relative;overflow:clip;overflow-x:clip;max-width:100%;background-color:var(--bg-top);background-image:radial-gradient(var(--grain) .7px,var(--clear) .9px),radial-gradient(var(--grain) .6px,var(--clear) .8px),linear-gradient(180deg,var(--bg-top) 0%,var(--bg) 55%,var(--bg-bottom) 100%);background-size:4px 4px,7px 7px,100% 100%;background-position:0 0,2px 3px,0 0}
.stage::before,.stage::after{content:"";position:absolute;border-radius:var(--r-circle);pointer-events:none;z-index:0;filter:blur(36px)}
.stage::before{inset:-22% -12% auto auto;width:52%;aspect-ratio:1;background:radial-gradient(closest-side,var(--blob-grape),var(--clear) 100%)}
.stage::after{inset:auto auto -30% -10%;width:44%;aspect-ratio:1;background:radial-gradient(closest-side,var(--blob-coral),var(--clear) 100%)}
.sky{position:absolute;inset:0;z-index:0;pointer-events:none}
.star{position:absolute;display:block}
.star path{fill:var(--ink-a08)}
.sq{position:absolute;display:block;width:8px;height:8px;border-radius:var(--r-pixel);background:var(--ink-a08);transform:rotate(18deg)}
.s1{left:3%;top:16%}.s2{left:43.5%;top:12%}.s3{left:51%;top:83%}.s4{left:96.5%;top:34%}.s5{left:89%;top:90%}.s6{left:63%;top:8%}
.q1{left:8%;top:93%}.q2{left:46.6%;top:47%}.q3{left:74%;top:10%}.q4{left:93%;top:64%;width:6px;height:6px}.q5{left:2%;top:58%;width:6px;height:6px}
.hero{position:relative;z-index:2;min-height:calc(100svh - 108px);display:flex;align-items:center;padding-top:24px;padding-bottom:40px}
.hero-grid{width:100%;display:grid;grid-template-columns:minmax(0,600px) auto;justify-content:space-between;align-items:center;gap:40px}
.copy{position:relative;z-index:3;min-width:0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;min-height:34px;padding:5px 16px 5px 12px;border-radius:var(--r-pill);background:var(--panel);box-shadow:var(--shadow-float);font-size:var(--fs-badge);font-weight:var(--weight-bold);color:var(--text)}
.eyebrow-dot{flex-shrink:0;width:10px;height:10px;border-radius:var(--r-circle);background:linear-gradient(135deg,var(--accent),var(--coral));box-shadow:0 0 0 4px var(--accent-a12)}
.title{margin:24px 0 0;font-family:var(--font-display);font-weight:var(--weight-display);font-size:var(--fs-h1);line-height:1.1;letter-spacing:-.02em;color:var(--text)}
.title-brand,.title-line{display:block}
.lede{margin:32px 0 0;max-width:560px;font-size:var(--fs-lede);line-height:1.75;color:var(--muted)}
.lede strong{color:var(--text);font-weight:var(--weight-heavy)}
.trust{display:flex;flex-wrap:wrap;gap:8px 12px;margin:24px 0 0;padding:0;list-style:none}
.trust li{display:inline-flex;align-items:center;gap:5px;font-size:var(--fs-sm);font-weight:var(--weight-bold);color:var(--text)}
.trust li::before{content:"✓";display:inline-grid;place-items:center;flex-shrink:0;width:18px;height:18px;border-radius:var(--r-circle);background:var(--accent-a12);color:var(--accent-dark);font-size:var(--fs-xs)}
.groove{display:grid;gap:12px;margin-top:32px;padding:16px 20px;border-radius:var(--r-md);background:var(--panel-2);box-shadow:inset 0 2px 5px var(--ink-a08),inset 0 -1px 0 var(--white-a80)}
.groove-row{display:flex;align-items:center;gap:16px;min-width:0}
.groove-label{flex:none;width:64px;font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:var(--weight-bold);color:var(--muted);letter-spacing:.02em}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;min-width:0}
.tag{display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:4px 12px 4px 10px;max-width:100%;border-radius:var(--r-pill);background:var(--panel);box-shadow:inset 0 1px 0 var(--white),0 0 0 1px var(--border);font-size:var(--fs-sm);font-weight:var(--weight-bold);color:var(--text);overflow-wrap:anywhere}
.tag svg{flex:none;width:16px;height:16px}
.flag{flex:none;display:block;width:22px;height:16px;overflow:hidden;border-radius:var(--r-mark)}
.fr{fill:var(--flag-red)}.fw{fill:var(--flag-white)}.fb{fill:var(--flag-blue)}.fedge{fill:none;stroke:var(--ink-a18);stroke-width:1}
@media(min-width:769px) and (max-width:1250px){
  .nav{gap:20px}.nav-links a,.more summary{padding-inline:10px;font-size:var(--fs-label)}.nav-end{gap:8px}
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px}
}
@media(max-width:1000px){
  .desktop-nav{display:none}.hamburger{display:flex}.nav{gap:16px}.nav-end{margin-left:auto}
  html.nav-open .nav-drawer{display:block}html.nav-open .nav-veil{display:block}
  .footer-grid{gap:24px}.grid-five{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:768px){
  h1,.title{font-size:var(--fs-mobile-h1)}
  .hero{min-height:auto;padding-top:32px;padding-bottom:32px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .copy{max-width:620px}.title{margin-top:20px}.lede{font-size:var(--fs-body);margin-top:24px}
  .groove{margin-top:24px}.groove-row{align-items:flex-start;gap:10px}.groove-label{width:48px;padding-top:5px}
  .grid-three{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.footer-grid>div:first-child{grid-column:1/-1}
  .section{padding-top:48px;padding-bottom:48px}
}
@media(max-width:640px){
  :root{--gutter:16px;--fs-brand:17px}
  .no-break{white-space:normal}
  .tilt,.tilt-card{transform:none}
  .stage::before,.stage::after,.sky{max-width:100%}
  .nav{gap:8px}.brand{gap:6px}.brand img{width:30px;height:30px}.nav-end{gap:6px;margin-left:auto}
  .lang{padding-inline:8px;font-size:var(--fs-xs)}.lang svg{display:none}
  .login{padding-inline:14px;font-size:var(--fs-sm);min-height:40px}
  .hamburger{min-width:44px;min-height:44px}
  .cta-row{gap:12px;margin-top:24px}.cta-row .btn{padding-inline:22px;min-height:52px}
  .groove{padding:16px 12px}.groove-label{display:none}
  .tag{font-size:var(--fs-xs);padding-inline:8px}
  .grid-five{grid-template-columns:repeat(2,minmax(0,1fr))}
  .panel,.card{padding:20px}
}
@media(max-width:359px){
  .brand{font-size:var(--fs-nav)}.brand img{width:26px;height:26px}.nav-end{gap:4px}.login{padding-inline:10px}.lang{padding-inline:6px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:0s!important;animation-duration:0s!important;animation-iteration-count:1!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}