:root{
  --bg:#FFFFFF;
  --bg-panel:#F4F7FB;
  --bg-panel-strong:#EAF1F8;
  --border:#DDE6EF;
  --accent:#00C2E8;
  --accent-dark:#0857C4;
  --text:#0A1526;
  --text-muted:#5A6B80;
  --success:#17B26A;
  --warn:#FF8A1E;
  --error:#E5484D;
  --deep:#07276B;
  --deep-top:#04194A;
  --deep-bottom:#0A3A8F;
  --hero-text:#F2FBFF;
  --hero-text-soft:rgba(235,250,255,.76);
  --hero-text-faint:rgba(235,250,255,.52);
  --hero-line:rgba(196,238,251,.30);
  --hero-chip:rgba(255,255,255,.07);
  --hero-chip-border:rgba(255,255,255,.20);
  --glass:rgba(255,255,255,.13);
  --glass-border:rgba(255,255,255,.34);
  --white-strong:rgba(255,255,255,.94);
  --white-dim:rgba(255,255,255,.32);
  --cyan-glow:rgba(0,194,232,.26);
  --cyan-glow-strong:rgba(0,194,232,.38);
  --white-glow:rgba(255,255,255,.10);
  --deep-shadow:rgba(3,18,56,.48);
  --soft-shadow:rgba(8,87,196,.12);
  --card-shadow:rgba(8,87,196,.16);
  --orange-top:#FB9743;
  --orange-bottom:#E97E22;
  --orange-glow:rgba(234,132,44,.30);
  --phone-frame-a:rgba(255,255,255,.55);
  --phone-frame-b:rgba(140,214,238,.30);
  --phone-frame-c:rgba(255,255,255,.10);
  --phone-body-a:#10346F;
  --phone-body-b:#071B4A;
  --phone-screen-a:#0A2258;
  --phone-screen-b:#061640;
  --phone-camera:#020B22;
  --phone-sheen:rgba(255,255,255,.13);
  --panel-row:rgba(255,255,255,.055);
  --panel-row-border:rgba(255,255,255,.13);
  --panel-on:rgba(0,194,232,.13);
  --panel-on-border:rgba(0,194,232,.42);
  --panel-track:rgba(255,255,255,.18);
  --panel-halo:rgba(23,178,106,.20);
  --stream-tail:rgba(0,194,232,0);
  --stream-mid:rgba(0,194,232,.38);
  --stream-head:rgba(240,252,255,.85);
  --overlay:rgba(4,25,74,.58);
  --footer-bg:#061B4B;
  --code-bg:#071B4A;
  --code-text:#DDF8FF;
  --focus-ring:rgba(0,194,232,.30);
  --radius-sm:12px;
  --radius-md:20px;
  --radius-lg:24px;
  --radius-xl:32px;
  --radius-pill:999px;
  --font-display:'Inter','Noto Sans SC',-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Inter','Noto Sans SC',-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  --wrap:1180px;
  --gutter:clamp(16px,4vw,48px);
  --header-height:72px;
  --section-space:clamp(72px,9vw,132px);
  --fast:160ms;
  --normal:360ms;
}
*,
*::before,
*::after{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
html.nav-open{overflow:hidden}
body{margin:0;min-width:320px;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.72;-webkit-font-smoothing:antialiased;overflow-x:clip}
img,svg,video,canvas{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
a{color:var(--accent-dark);text-underline-offset:.18em}
a:hover{color:var(--text)}
p,ul,ol,dl,figure,blockquote,pre,table{margin-top:0}
h1,h2,h3,h4{margin:0 0 .55em;font-family:var(--font-display);color:var(--text);line-height:1.16;text-wrap:balance}
h1{font-size:clamp(34px,4.2vw,48px);font-weight:850;letter-spacing:-.01em}
h2{font-size:clamp(30px,3.6vw,44px);font-weight:820;letter-spacing:-.01em}
h3{font-size:clamp(21px,2.3vw,28px);font-weight:780}
h4{font-size:18px;font-weight:760}
strong{font-weight:760}
code,kbd,samp{font-family:var(--font-mono);font-size:.9em}
:not(pre)>code{padding:.12em .38em;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-panel);color:var(--text);overflow-wrap:anywhere}
pre{max-width:100%;padding:22px 24px;border-radius:var(--radius-md);background:var(--code-bg);color:var(--code-text);overflow-x:auto;overscroll-behavior-inline:contain;-webkit-overflow-scrolling:touch}
pre code{color:inherit;white-space:pre}
table{width:100%;border-collapse:collapse}
th,td{padding:15px 18px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
th{background:var(--bg-panel);color:var(--text);font-weight:750}
td{color:var(--text-muted)}
hr{height:1px;margin:48px 0;border:0;background:var(--border)}
::selection{background:var(--accent);color:var(--deep)}
:focus-visible{outline:3px solid var(--focus-ring);outline-offset:3px}
.wrap{width:100%;max-width:calc(var(--wrap) + var(--gutter) * 2);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:var(--section-space);padding-bottom:var(--section-space);overflow-x:clip}
.section-panel{background:var(--bg-panel);color:var(--text)}
.section-kicker{margin-bottom:14px;color:var(--accent-dark);font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.section-head{max-width:760px;margin-bottom:48px}
.section-head p{max-width:680px;margin:0;color:var(--text-muted);font-size:18px}
.no-break{white-space:nowrap}
.muted{color:var(--text-muted)}
.grid{display:grid;gap:24px}
.grid>*{min-width:0}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.cluster>*{min-width:0}
.icon,
.status-dot{flex-shrink:0}
.card{min-width:0;padding:28px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg);color:var(--text);box-shadow:0 18px 48px var(--soft-shadow);transition:transform var(--fast) ease,box-shadow var(--fast) ease,border-color var(--fast) ease}
.card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:0 24px 56px var(--card-shadow)}
.panel{min-width:0;padding:clamp(24px,4vw,48px);border-radius:var(--radius-lg);background:var(--bg-panel-strong);color:var(--text)}
.tilt{transform:rotate(-.45deg)}
.btn{display:inline-flex;min-height:48px;align-items:center;justify-content:center;gap:9px;padding:14px 28px;border:1px solid transparent;border-radius:var(--radius-pill);font-family:var(--font-display);font-size:15px;font-weight:760;line-height:1.15;text-align:center;text-decoration:none;cursor:pointer;transition:transform var(--fast) ease,filter var(--fast) ease,background var(--fast) ease,border-color var(--fast) ease}
.btn svg{width:17px;height:17px;flex-shrink:0}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(180deg,var(--orange-top),var(--orange-bottom));color:var(--deep);box-shadow:0 12px 30px var(--orange-glow)}
.btn-primary:hover{color:var(--deep);filter:brightness(1.05)}
.btn-secondary{border-color:var(--accent-dark);background:var(--bg);color:var(--accent-dark)}
.btn-secondary:hover{background:var(--bg-panel);color:var(--text)}
.btn-dark{background:var(--deep);color:var(--hero-text)}
.btn-dark:hover{color:var(--hero-text);filter:brightness(1.12)}
.btn[disabled],
.btn.is-disabled{opacity:.5;pointer-events:none}
.site-head{position:relative;z-index:100;width:100%;height:var(--header-height);color:var(--text)}
.site-head.is-overlay{position:absolute;inset:0 0 auto;background:var(--deep-top);color:var(--hero-text)}
.site-head-shell{position:relative;z-index:3;display:flex;width:100%;height:100%;align-items:center;padding-inline:var(--gutter)}
.brand{display:flex;flex-shrink:0;align-items:center;gap:10px;color:inherit;text-decoration:none}
.brand img{width:28px;height:28px;flex-shrink:0}
.brand-name{font-family:var(--font-display);font-size:16.5px;font-weight:820;letter-spacing:.01em}
.desktop-nav{margin-left:auto}
.desktop-nav ul{display:flex;align-items:center;margin:0;padding:0;list-style:none}
.desktop-nav li{display:flex;align-items:center}
.desktop-nav li+li::before{content:"·";padding-inline:14px;color:var(--text-muted);font-weight:700}
.is-overlay .desktop-nav li+li::before{color:var(--hero-text-faint)}
.desktop-nav a{color:var(--text-muted);font-size:14px;font-weight:560;text-decoration:none}
.desktop-nav a:hover,
.desktop-nav a[aria-current="page"]{color:var(--text);font-weight:760}
.is-overlay .desktop-nav a{color:var(--hero-text-soft)}
.is-overlay .desktop-nav a:hover,
.is-overlay .desktop-nav a[aria-current="page"]{color:var(--hero-text)}
.header-tools{display:flex;align-items:center;gap:8px;margin-left:24px}
.lang-control{position:relative}
.lang-button{min-height:38px;padding:7px 15px;border:1px solid var(--border);border-radius:var(--radius-pill);background:var(--bg);color:var(--text);font-size:13px;cursor:pointer}
.is-overlay .lang-button{border-color:var(--hero-chip-border);background:var(--deep);color:var(--hero-text)}
.lang-short{display:none}
.lang-menu{position:absolute;top:calc(100% + 10px);right:0;width:168px;margin:0;padding:8px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg);color:var(--text);box-shadow:0 18px 48px var(--deep-shadow);list-style:none}
.lang-menu[hidden]{display:none}
.lang-menu a{display:block;padding:10px 12px;border-radius:var(--radius-sm);color:var(--text);text-decoration:none}
.lang-menu a:hover,
.lang-menu a[aria-current="true"]{background:var(--bg-panel);color:var(--accent-dark)}
.menu-button{display:none;width:44px;min-width:44px;height:44px;min-height:44px;padding:10px;border:0;border-radius:var(--radius-pill);background:transparent;color:inherit;cursor:pointer}
.menu-button span{display:block;width:22px;height:2px;margin:4px auto;border-radius:var(--radius-pill);background:currentColor;transition:transform var(--fast) ease,opacity var(--fast) ease}
.menu-button[aria-expanded="true"] span:first-child{transform:translateY(6px) rotate(45deg)}
.menu-button[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-button[aria-expanded="true"] span:last-child{transform:translateY(-6px) rotate(-45deg)}
.mobile-nav{display:none}
.nav-veil{display:none}
.site-footer{overflow-x:clip;background:var(--footer-bg);color:var(--hero-text-soft)}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1.4fr 1fr;gap:42px;padding-top:72px;padding-bottom:54px}
.footer-brand p{max-width:330px;color:var(--hero-text-soft)}
.footer-title{margin-bottom:16px;color:var(--hero-text);font-size:14px;font-weight:780}
.footer-links{margin:0;padding:0;list-style:none}
.footer-links li+li{margin-top:8px}
.footer-links a{color:var(--hero-text-soft);text-decoration:none}
.footer-links a:hover{color:var(--hero-text)}
.footer-logo{display:flex;align-items:center;gap:11px;margin-bottom:18px;color:var(--hero-text);font-weight:820;text-decoration:none}
.footer-logo img{width:32px;height:32px}
.footer-hot{display:flex;flex-wrap:wrap;gap:8px}
.footer-hot a{max-width:100%;padding:7px 11px;border:1px solid var(--hero-chip-border);border-radius:var(--radius-pill);color:var(--hero-text-soft);font-size:12px;text-decoration:none;overflow:hidden}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-top:22px;padding-bottom:28px;border-top:1px solid var(--hero-chip-border);color:var(--hero-text-faint);font-size:13px}
.footer-bottom a{color:var(--hero-text-soft)}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .65s ease,transform .65s ease}
.reveal.shown{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
  .reveal{opacity:1;transform:none}
}
@media (max-width:980px){
  .desktop-nav{display:none}
  .header-tools{margin-left:auto}
  .menu-button{display:block}
  .mobile-nav{position:fixed;z-index:4;top:var(--header-height);right:0;bottom:auto;left:0;display:none;max-height:calc(100dvh - var(--header-height));padding:14px var(--gutter) 24px;background:var(--bg);color:var(--text);overflow-y:auto;overscroll-behavior:contain;box-shadow:0 24px 54px var(--deep-shadow)}
  .mobile-nav.is-open{display:block}
  .mobile-nav ul{margin:0;padding:0;list-style:none}
  .mobile-nav a{display:flex;width:100%;min-height:48px;align-items:center;padding:11px 10px;border-bottom:1px solid var(--border);color:var(--text);font-weight:680;text-decoration:none}
  .mobile-nav a[aria-current="page"]{color:var(--accent-dark)}
  .mobile-language{margin-top:14px}
  .mobile-language strong{display:block;padding:8px 10px;color:var(--text-muted);font-size:12px}
  .nav-veil{position:fixed;z-index:2;inset:var(--header-height) 0 0;display:none;background:var(--overlay)}
  .nav-veil.is-open{display:block}
  .footer-main{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  h1{font-size:clamp(24px,7.5vw,30px);line-height:1.16;letter-spacing:0}
  h2{font-size:clamp(27px,7vw,34px)}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .section-head{margin-bottom:34px}
  .section-head p{font-size:16px}
  .tilt{transform:none}
}
@media (max-width:640px){
  :root{--gutter:16px;--header-height:64px;--section-space:68px}
  body{font-size:15px}
  .site-head-shell{padding-inline:var(--gutter)}
  .brand-name{font-size:15px}
  .lang-full{display:none}
  .lang-short{display:inline}
  .lang-button{min-width:58px;padding-inline:11px;white-space:nowrap}
  .card{padding:22px}
  .panel{padding:22px}
  .btn{width:100%;padding-inline:18px}
  .cluster.actions{align-items:stretch;flex-direction:column}
  .footer-main{grid-template-columns:1fr;gap:34px;padding-top:58px}
  .footer-bottom{align-items:flex-start;flex-direction:column}
  .tilt,[class*="tilt"]{transform:none!important}
  pre{padding:18px 16px}
  th,td{padding:12px 14px}
}