:root {
  --bg: #FFFFFF;
  --panel: #F7F7F9;
  --panel-2: #EFEFF3;
  --line: #E6E6EB;
  --dot-grey: #D9D9E0;
  --accent: #A72CB0;
  --accent-dark: #7E1F86;
  --grad-a: #6C7BF2;
  --grad-c: #EE5C9C;
  --text: #18181B;
  --text-hover: #2A2A30;
  --muted: #5F5F6B;
  --muted-2: #8C8C98;
  --success: #1F9D62;
  --warn: #C98A0B;
  --error: #D33A3A;
  --success-ink: #167244;
  --warn-ink: #785006;
  --error-ink: #A62626;
  --on-dark: #FFFFFF;
  --on-dark-dim: rgba(255,255,255,.72);
  --on-dark-soft: rgba(255,255,255,.12);
  --accent-soft: rgba(167,44,176,.075);
  --accent-pill: rgba(167,44,176,.10);
  --success-soft: rgba(31,157,98,.11);
  --warn-soft: rgba(201,138,11,.10);
  --error-soft: rgba(211,58,58,.10);
  --mask-solid: #000000;
  --clear: transparent;
  --font-display: "Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body: "Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans","Malgun Gothic","Microsoft YaHei",sans-serif;
  --font-mono: "JetBrains Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-display: 800;
  --size-micro: 11px;
  --size-xs: 12px;
  --size-sm: 13px;
  --size-label: 13.5px;
  --size-meta: 14px;
  --size-nav: 14.5px;
  --size-body: 15px;
  --size-button: 15.5px;
  --size-lead: 17px;
  --size-subtitle: 20px;
  --size-h3: 22px;
  --size-h2: clamp(26px,3vw,36px);
  --size-h1: clamp(34px,3.4vw,48px);
  --tracking-title: -.02em;
  --tracking-mono: .12em;
  --leading-body: 1.6;
  --leading-title: 1.15;
  --r-tiny: 1px;
  --r-xs: 6px;
  --r-sm: 8px;
  --r-logo: 9px;
  --r-icon: 10px;
  --r-md: 12px;
  --r-btn: 14px;
  --r-snip: 18px;
  --r-lg: 20px;
  --r-xl: 24px;
  --r-pill: 999px;
  --r-circle: 50%;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
  --gutter: 24px;
  --width-page: 1200px;
  --width-reading: 800px;
  --width-header: 1280px;
  --header-height: 64px;
  --shadow-soft: 0 1px 2px rgba(24,24,27,.04),0 2px 6px rgba(24,24,27,.04);
  --shadow-window: 0 1px 2px rgba(24,24,27,.04),0 10px 28px rgba(24,24,27,.06),0 36px 80px -18px rgba(24,24,27,.12);
  --shadow-mid: 0 1px 2px rgba(24,24,27,.05),0 10px 24px rgba(24,24,27,.08),0 28px 56px -18px rgba(24,24,27,.14);
  --shadow-float: 0 2px 4px rgba(24,24,27,.05),0 14px 30px rgba(24,24,27,.10),0 44px 80px -20px rgba(24,24,27,.22);
  --shadow-btn: inset 0 1px 0 rgba(255,255,255,.14),0 1px 2px rgba(24,24,27,.20),0 8px 20px -6px rgba(24,24,27,.40);
  --grad-word: linear-gradient(100deg,var(--grad-a) 0%,var(--accent) 52%,var(--grad-c) 100%);
  --grad-logo: linear-gradient(140deg,var(--grad-a) 0%,var(--accent) 55%,var(--grad-c) 100%);
  --duration-fast: .2s;
  --duration-reveal: .6s;
  --cycle-duration: 8s;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
html, body { margin: 0; padding: 0; }
html.nav-open { overflow: hidden; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button, input, select, textarea { max-width: 100%; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
button svg, a svg, .badge-dot, .sd { flex-shrink: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
::selection { background: var(--accent-pill); color: var(--text); }
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: var(--weight-display);
  letter-spacing: var(--tracking-title);
  line-height: var(--leading-title);
  text-wrap: balance;
  overflow-wrap: break-word;
}
h1 { font-size: var(--size-h1); margin: 0 0 var(--space-6); }
h2 { font-size: var(--size-h2); margin: 0 0 var(--space-6); }
h3 { font-size: var(--size-h3); margin: 0 0 var(--space-4); }
p { margin: 0 0 var(--space-5); }
ul, ol { padding-left: var(--space-6); }
code, kbd, pre { font-family: var(--font-mono); }
code { overflow-wrap: anywhere; }
pre {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  padding: var(--space-5);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  color: var(--text);
  font-size: var(--size-sm);
  white-space: pre;
}
pre code { overflow-wrap: normal; word-break: normal; }
.wrap {
  width: 100%;
  max-width: var(--width-page);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-width: 0;
}
.reading { max-width: var(--width-reading); }
.section { padding-top: var(--space-24); padding-bottom: var(--space-24); }
.section + .section { border-top: 1px solid var(--line); }
.decorated, .hero, .pipeline { position: relative; overflow-x: clip; }
.grid { display: grid; gap: var(--space-6); }
.grid > *, .footer-grid > *, .win-body > *, .feature-grid > * { min-width: 0; }
.grid-2 { grid-template-columns: repeat(2,minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3,minmax(0,1fr)); }
.stack > * + * { margin-top: var(--space-5); }
.inline-row { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-3); }
.nowrap { white-space: nowrap; }
.muted { color: var(--muted); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--size-micro);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--muted);
}
.lead { font-size: var(--size-lead); line-height: var(--leading-body); color: var(--muted); }
.prose { min-width: 0; overflow-wrap: break-word; }
.prose > :first-child { margin-top: 0; }
.prose h2 { margin-top: var(--space-16); }
.prose h3 { margin-top: var(--space-8); }
.prose p, .prose li { line-height: 1.85; }
.prose a:not(.btn) { text-decoration: underline; text-underline-offset: 3px; }
.prose :not(pre) > code {
  background: var(--panel);
  color: var(--text);
  padding: 2px 5px;
  border-radius: var(--r-xs);
  font-size: .92em;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 10px 24px;
  border: 1px solid var(--clear);
  border-radius: var(--r-btn);
  font-size: var(--size-button);
  font-weight: var(--weight-semibold);
  line-height: 1.4;
  text-align: center;
  transition: transform var(--duration-fast),background-color var(--duration-fast),border-color var(--duration-fast);
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--text); color: var(--on-dark); box-shadow: var(--shadow-btn); }
.btn-primary:hover, .btn-primary.is-hover { background: var(--text-hover); color: var(--on-dark); transform: translateY(-1px); }
.btn-ghost { background: var(--bg); color: var(--text); border-color: var(--line); box-shadow: var(--shadow-soft); }
.btn-ghost:hover, .btn-ghost.is-hover { border-color: var(--muted-2); transform: translateY(-1px); }
.btn:active, .btn.is-active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { background: var(--panel-2); color: var(--muted); box-shadow: none; cursor: not-allowed; transform: none; }
.btn-small { min-height: 44px; padding: 8px 16px; font-size: var(--size-meta); }
.card, .panel {
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: var(--space-6);
  background: var(--bg);
  color: var(--text);
  min-width: 0;
}
.card { box-shadow: var(--shadow-soft); }
.panel { background: var(--panel); color: var(--text); }
.card p:last-child, .panel p:last-child { margin-bottom: 0; }
.topbar, #site-header {
  position: relative;
  z-index: 60;
  background: var(--bg);
  color: var(--text);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  width: 100%;
  max-width: min(100%,calc(var(--width-header) + var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--gutter);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand img { width: 30px; height: 30px; flex-shrink: 0; }
.brand-name { font-family: var(--font-display); font-weight: var(--weight-display); font-size: var(--size-lead); letter-spacing: var(--tracking-title); }
.desktop-nav { min-width: 0; }
.navline {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0;
}
.navline li { display: flex; align-items: center; }
.navline a { padding: 6px 2px; font-size: var(--size-nav); color: var(--muted); white-space: nowrap; }
.navline a:hover, .navline a[aria-current="page"] { color: var(--text); }
.navline a[aria-current="page"] { font-weight: var(--weight-semibold); }
.navline .sep { color: var(--muted-2); margin-inline: 13px; user-select: none; }
.header-tools { display: flex; align-items: center; gap: var(--space-2); flex-shrink: 0; }
.language { position: relative; }
.lang {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 34px;
  padding: 5px 12px 5px 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--bg);
  color: var(--muted);
  font-size: var(--size-label);
  white-space: nowrap;
}
.lang svg { width: 15px; height: 15px; }
.lang-short { display: none; }
.lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 180px;
  margin: 0;
  padding: var(--space-2);
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg);
  color: var(--text);
  box-shadow: var(--shadow-mid);
  z-index: 4;
}
.lang-menu a { display: flex; align-items: center; min-height: 44px; padding: 8px 12px; border-radius: var(--r-sm); }
.lang-menu a:hover, .lang-menu a[aria-current="true"] { background: var(--panel); color: var(--text); }
.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg);
  color: var(--text);
}
.menu-toggle svg { width: 20px; height: 20px; }
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  padding: var(--space-4) var(--gutter) var(--space-6);
  border-bottom: 1px solid var(--line);
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg);
  color: var(--text);
  box-shadow: var(--shadow-mid);
  z-index: 3;
}
.mobile-nav ul { list-style: none; padding: 0; margin: 0; }
.mobile-nav a { display: flex; align-items: center; width: 100%; min-height: 44px; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.mobile-nav a[aria-current="page"] { font-weight: var(--weight-bold); }
.mobile-nav .eyebrow { margin: var(--space-5) 12px var(--space-2); }
.nav-veil { position: fixed; inset: var(--header-height) 0 0; z-index: 1; border: 0; background: var(--on-dark-soft); color: var(--text); }
.site-footer, #site-footer { background: var(--bg); color: var(--text); }
.footer-main { border-top: 1px solid var(--line); padding-top: var(--space-16); padding-bottom: var(--space-12); }
.footer-grid { display: grid; grid-template-columns: 1.25fr .8fr 1.4fr .8fr; gap: var(--space-10); }
.footer-brand p { max-width: 290px; margin-top: var(--space-4); color: var(--muted); font-size: var(--size-meta); }
.footer-heading { font-size: var(--size-meta); font-weight: var(--weight-bold); margin: 0 0 var(--space-4); }
.footer-links { margin: 0; padding: 0; list-style: none; }
.footer-links a { display: inline-block; padding-block: 5px; color: var(--muted); font-size: var(--size-meta); }
.footer-links a:hover { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.footer-bottom { border-top: 1px solid var(--line); padding-top: var(--space-5); padding-bottom: var(--space-24); display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4); color: var(--muted); font-size: var(--size-sm); }
.footer-legal { display: flex; flex-wrap: wrap; gap: var(--space-5); }
.reveal { opacity: 1; transform: none; }
html.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(16px); }
html.reveal-ready .reveal { transition: opacity var(--duration-reveal),transform var(--duration-reveal); }
.reveal.shown { opacity: 1; transform: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
@media (max-width: 1100px) {
  .desktop-nav { display: none; }
  .header-tools { margin-left: auto; }
  .menu-toggle { display: inline-flex; }
  .mobile-nav.is-open { display: block; }
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 768px) {
  :root { --size-h1: clamp(24px,4.2vw,30px); }
  .grid-3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; --space-24: 64px; }
  .topbar-in { gap: var(--space-2); }
  .lang-full { display: none; }
  .lang-short { display: inline; }
  .lang { min-height: 44px; }
  .grid-2, .grid-3, .footer-grid { grid-template-columns: minmax(0,1fr); }
  .footer-grid { gap: var(--space-8); }
  .tilt, [data-tilt] { transform: none !important; }
  .card, .panel { padding: var(--space-5); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html.reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
}