:root{
  --color-bg:#FAFBFB;
  --color-panel:#FFFFFF;
  --color-panel-soft:#F3F6F5;
  --color-border:#E2E8E7;
  --color-accent:#00C7A8;
  --color-accent-dark:#0A6E75;
  --color-text:#13221F;
  --color-muted:#5C6B68;
  --color-success:#12A150;
  --color-warning:#D98A0B;
  --color-error:#D6453D;
  --color-hero-a:#063F4C;
  --color-hero-mid-a:#0A5B60;
  --color-hero-mid-b:#12907F;
  --color-hero-b:#35F0C8;
  --color-hero-text:#F2FBF8;
  --color-hero-muted:rgba(233,250,245,.80);
  --color-hero-faint:rgba(233,250,245,.58);
  --color-glass-high:rgba(255,255,255,.16);
  --color-glass-low:rgba(255,255,255,.07);
  --color-glass-line:rgba(255,255,255,.38);
  --color-glass-line-soft:rgba(255,255,255,.20);
  --color-glass-row:rgba(255,255,255,.10);
  --color-nav-glass:rgba(4,34,40,.34);
  --color-nav-line:rgba(255,255,255,.14);
  --color-wave:rgba(255,255,255,.62);
  --color-shadow:rgba(3,30,36,.14);
  --color-shadow-deep:rgba(3,30,36,.42);
  --color-button-shadow:rgba(4,44,50,.30);
  --color-overlay:rgba(3,30,36,.52);
  --color-focus:rgba(0,199,168,.28);
  --color-code-bg:#102D2E;
  --color-code-text:#EAF9F5;
  --color-flag-white:#FFFFFF;
  --color-flag-red:#CB3038;
  --color-flag-navy:#33418C;
  --color-flag-blue:#1F4E9C;
  --color-flag-edge:rgba(255,255,255,.42);
  --font-display:Georgia,'Palatino Linotype','Songti SC','Noto Serif CJK SC',serif;
  --font-body:'Inter',-apple-system,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SF Mono',Consolas,monospace;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:20px;
  --radius-xl:28px;
  --radius-pill:999px;
  --shadow-card:0 18px 46px var(--color-shadow);
  --shadow-float:0 34px 90px var(--color-shadow-deep);
  --wrap:1120px;
  --wide:1280px;
  --gutter:clamp(16px,4vw,48px);
  --section-space:clamp(72px,10vw,132px);
  --header-height:76px;
  --ease:cubic-bezier(.22,.58,.36,1);
}
*,
*::before,
*::after{box-sizing:border-box}
html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  background:var(--color-bg);
}
html.nav-open{overflow:hidden}
body{
  margin:0;
  min-width:320px;
  overflow-x:clip;
  background:var(--color-bg);
  color:var(--color-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
}
main,
section,
article,
aside,
header,
footer,
nav,
div{min-width:0}
img,
svg,
video{display:block;max-width:100%}
img{height:auto}
svg[aria-hidden="true"]{flex-shrink:0}
button,
input,
select,
textarea{font:inherit}
button,
a{-webkit-tap-highlight-color:transparent}
button{color:inherit}
a{
  color:var(--color-accent-dark);
  text-decoration-thickness:.08em;
  text-underline-offset:.18em;
}
a:hover{color:var(--color-text)}
p,
ul,
ol,
blockquote,
pre,
table{margin-top:0;margin-bottom:1.25em}
ul,
ol{padding-left:1.35em}
nav ul,
.clean-list{margin:0;padding:0;list-style:none}
h1,
h2,
h3,
h4{
  margin-top:0;
  color:var(--color-text);
  font-family:var(--font-display);
  font-weight:400;
  line-height:1.18;
  text-wrap:balance;
}
h1{font-size:clamp(34px,4vw,48px);letter-spacing:.008em}
h2{font-size:clamp(30px,3.4vw,44px)}
h3{font-size:clamp(22px,2.4vw,30px)}
h4{font-size:19px}
.title-lock{white-space:nowrap}
strong{font-weight:650}
small{font-size:.875rem}
hr{border:0;border-top:1px solid var(--color-border);margin:2rem 0}
code,
kbd,
samp{font-family:var(--font-mono)}
:not(pre)>code{
  max-width:100%;
  padding:.12em .4em;
  border-radius:var(--radius-sm);
  background:var(--color-panel-soft);
  color:var(--color-text);
  overflow-wrap:anywhere;
}
pre{
  max-width:100%;
  overflow-x:auto;
  padding:20px;
  border-radius:var(--radius-lg);
  background:var(--color-code-bg);
  color:var(--color-code-text);
  line-height:1.65;
  -webkit-overflow-scrolling:touch;
}
pre code{color:inherit;white-space:pre}
table{
  width:100%;
  border-collapse:collapse;
  background:var(--color-panel);
  color:var(--color-text);
}
th,
td{
  padding:14px 16px;
  border:1px solid var(--color-border);
  text-align:left;
  vertical-align:top;
}
th{
  background:var(--color-panel-soft);
  color:var(--color-text);
  font-weight:650;
}
:focus-visible{
  outline:3px solid var(--color-focus);
  outline-offset:3px;
}
.wrap{
  width:100%;
  max-width:calc(var(--wrap) + var(--gutter) * 2);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.wide-wrap{
  width:100%;
  max-width:min(100%,calc(var(--wide) + var(--gutter) * 2));
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{
  position:relative;
  overflow-x:clip;
  padding-top:var(--section-space);
  padding-bottom:var(--section-space);
}
.section-soft{
  background:var(--color-panel-soft);
  color:var(--color-text);
}
.section-head{max-width:760px;margin-bottom:42px}
.eyebrow{
  margin-bottom:12px;
  color:var(--color-accent-dark);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:650;
  letter-spacing:.1em;
  text-transform:uppercase;
}
.lead{
  max-width:720px;
  color:var(--color-muted);
  font-size:clamp(17px,2vw,21px);
}
.muted{color:var(--color-muted)}
.mono{font-family:var(--font-mono)}
.panel,
.card{
  border:1px solid var(--color-border);
  border-radius:var(--radius-xl);
  background:var(--color-panel);
  color:var(--color-text);
  box-shadow:var(--shadow-card);
}
.panel{padding:clamp(24px,4vw,44px)}
.card{padding:24px}
.grid-2,
.grid-3,
.grid-4{
  display:grid;
  gap:24px;
}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.btn{
  display:inline-flex;
  min-height:48px;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:11px 24px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  cursor:pointer;
  font-weight:650;
  line-height:1.2;
  text-decoration:none;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{
  background:var(--color-accent-dark);
  color:var(--color-panel);
  box-shadow:0 12px 28px var(--color-shadow);
}
.btn-primary:hover{background:var(--color-text);color:var(--color-panel)}
.btn-secondary{
  border-color:var(--color-accent-dark);
  background:var(--color-panel);
  color:var(--color-accent-dark);
}
.btn-secondary:hover{background:var(--color-panel-soft);color:var(--color-text)}
.btn-quiet{
  border-color:var(--color-border);
  background:var(--color-panel-soft);
  color:var(--color-text);
}
.btn[disabled],
.btn.is-disabled{
  cursor:not-allowed;
  opacity:.55;
  transform:none;
}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.pill{
  display:inline-flex;
  max-width:100%;
  min-height:30px;
  align-items:center;
  gap:7px;
  padding:4px 11px;
  overflow:hidden;
  border:1px solid var(--color-border);
  border-radius:var(--radius-pill);
  background:var(--color-panel);
  color:var(--color-text);
  font-family:var(--font-mono);
  font-size:12px;
  white-space:nowrap;
}
.status-dot{
  width:8px;
  height:8px;
  flex-shrink:0;
  border-radius:50%;
  background:var(--color-success);
}
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .65s var(--ease),transform .65s var(--ease);
}
.reveal.shown{opacity:1;transform:none}
.site-head{
  position:relative;
  z-index:80;
  background:var(--color-panel);
  color:var(--color-text);
}
.site-head-inner{
  width:100%;
  max-width:min(100%,calc(1280px + var(--gutter) * 2));
  min-height:var(--header-height);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:flex;
  align-items:center;
  gap:22px;
}
.site-brand{
  display:inline-flex;
  flex-shrink:0;
  align-items:center;
  gap:10px;
  color:var(--color-text);
  font-weight:650;
  text-decoration:none;
}
.site-brand img{width:34px;height:34px;flex-shrink:0}
.desktop-nav{
  display:flex;
  margin-left:auto;
  align-items:center;
  gap:4px;
  padding:5px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-pill);
  background:var(--color-panel-soft);
}
.desktop-nav a{
  display:flex;
  min-height:40px;
  align-items:center;
  padding:7px 18px;
  border-radius:var(--radius-pill);
  color:var(--color-muted);
  text-decoration:none;
}
.desktop-nav a:hover{color:var(--color-text)}
.desktop-nav a.is-active{
  background:var(--color-panel);
  color:var(--color-text);
  box-shadow:0 5px 16px var(--color-shadow);
}
.header-tools{
  position:relative;
  display:flex;
  flex-shrink:0;
  align-items:center;
  gap:8px;
}
.lang-button,
.menu-button{
  min-height:44px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-pill);
  background:var(--color-panel);
  color:var(--color-text);
  cursor:pointer;
}
.lang-button{
  display:flex;
  min-width:116px;
  align-items:center;
  justify-content:center;
  gap:6px;
  padding:7px 14px;
}
.lang-short{display:none}
.lang-menu{
  position:absolute;
  top:calc(100% + 10px);
  right:0;
  z-index:95;
  display:none;
  width:180px;
  padding:8px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-lg);
  background:var(--color-panel);
  color:var(--color-text);
  box-shadow:var(--shadow-card);
}
.lang-menu.is-open{display:block}
.lang-menu a{
  display:flex;
  width:100%;
  min-height:44px;
  align-items:center;
  padding:8px 12px;
  border-radius:var(--radius-md);
  color:var(--color-text);
  text-decoration:none;
}
.lang-menu a:hover,
.lang-menu a[aria-current="true"]{background:var(--color-panel-soft)}
.menu-button{
  display:none;
  min-width:44px;
  padding:0;
  place-items:center;
}
.menu-button span,
.menu-button::before,
.menu-button::after{
  width:18px;
  height:2px;
  border-radius:var(--radius-pill);
  background:var(--color-text);
  content:"";
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.menu-button{gap:4px}
.menu-button[aria-expanded="true"] span{opacity:0}
.menu-button[aria-expanded="true"]::before{transform:translateY(6px) rotate(45deg)}
.menu-button[aria-expanded="true"]::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-nav{
  position:absolute;
  top:100%;
  left:var(--gutter);
  right:var(--gutter);
  z-index:90;
  display:none;
  max-height:calc(100dvh - var(--header-height) - 16px);
  overflow-y:auto;
  overscroll-behavior:contain;
  padding:12px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-xl);
  background:var(--color-panel);
  color:var(--color-text);
  box-shadow:var(--shadow-card);
}
.mobile-nav.is-open{display:block}
.mobile-nav a{
  display:flex;
  width:100%;
  min-height:48px;
  align-items:center;
  padding:10px 14px;
  border-radius:var(--radius-md);
  color:var(--color-text);
  text-decoration:none;
}
.mobile-nav a:hover,
.mobile-nav a.is-active,
.mobile-nav a[aria-current="true"]{background:var(--color-panel-soft)}
.mobile-nav-label{
  padding:16px 14px 6px;
  color:var(--color-muted);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
}
.nav-veil{
  position:fixed;
  inset:0;
  z-index:70;
  display:none;
  background:var(--color-overlay);
}
.nav-veil.is-open{display:block}
.site-footer{
  padding-top:70px;
  background:var(--color-code-bg);
  color:var(--color-code-text);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.3fr .8fr 1.3fr .9fr;
  gap:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  color:var(--color-code-text);
  font-weight:650;
}
.footer-brand img{width:38px;height:38px}
.footer-copy{color:var(--color-hero-muted)}
.footer-title{
  margin-bottom:14px;
  color:var(--color-code-text);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
}
.footer-links{margin:0;padding:0;list-style:none}
.footer-links a,
.footer-hot a{
  display:inline-flex;
  min-height:36px;
  align-items:center;
  color:var(--color-hero-muted);
  text-decoration:none;
}
.footer-links a:hover,
.footer-hot a:hover{color:var(--color-hero-text)}
.footer-hot{display:flex;flex-wrap:wrap;gap:5px 14px}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:18px;
  margin-top:52px;
  padding-top:22px;
  padding-bottom:24px;
  border-top:1px solid var(--color-glass-line-soft);
  color:var(--color-hero-faint);
  font-size:13px;
}
.footer-legal{display:flex;flex-wrap:wrap;gap:18px}
.footer-legal a{color:var(--color-hero-muted)}
.prose{max-width:780px}
.prose h2{margin-top:2.4em}
.prose h3{margin-top:1.8em}
.prose img{border-radius:var(--radius-lg)}
.prose > .data-table{
  display:block;
  max-width:100%;
  min-width:0;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.tilt-card{transform:rotate(.35deg)}
.decorated-section{position:relative;overflow-x:clip}
.decorated-section > .decoration{pointer-events:none}
svg.full-bleed-art{position:absolute;inset:0;width:100%;height:100%}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}
@media (max-width:960px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .desktop-nav{display:none}
  .header-tools{margin-left:auto}
  .menu-button{display:grid}
}
@media (max-width:768px){
  h1{font-size:clamp(24px,7.5vw,30px)}
  h2{font-size:clamp(27px,7vw,36px)}
  .section{padding-top:72px;padding-bottom:72px}
  .grid-2,
  .grid-3{grid-template-columns:1fr}
  .lang-button{min-width:62px}
  .lang-full{display:none}
  .lang-short{display:inline}
}
@media (max-width:640px){
  :root{--gutter:16px}
  .grid-4{grid-template-columns:1fr}
  .site-brand span{font-size:14px}
  .site-head-inner{gap:8px}
  .tilt-card{transform:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .btn-row .btn{width:100%}
  .pill-row{flex-direction:row;flex-wrap:wrap}
  th,
  td{padding:11px 12px}
}
@media (max-width:360px){
  .site-brand span{display:none}
  .lang-button{min-width:54px;padding-inline:10px}
}