:root {
  --bg: #F5F5F2;
  --bg-panel: #FFFFFF;
  --bg-panel-2: #1E1C1B;
  --bg-panel-3: #2B2927;
  --black: #000000;
  --border: #E3E2DD;
  --border-strong: #D4D3CD;
  --accent: #1652F0;
  --accent-dark: #0E3BBE;
  --accent-soft: #E8EEFE;
  --accent-ring: rgba(22,82,240,.16);
  --coral: #E2724F;
  --text: #1A1918;
  --text-muted: #5F5D58;
  --text-faint: #8F8D87;
  --on-dark: #FFFFFF;
  --on-dark-muted: rgba(255,255,255,.7);
  --success: #1E9E5A;
  --warn: #C9821F;
  --error: #D2433A;
  --chrome-dot: #D9D8D3;
  --switch-off: #D9D8D3;
  --knob: #FFFFFF;
  --veil: rgba(26,25,24,.32);
  --clear: transparent;
  --font-display: 'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --font-body: 'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono: 'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --r-btn: 14px;
  --r-card: 20px;
  --r-window: 24px;
  --r-phone: 36px;
  --r-phone-screen: 29px;
  --r-inner: 12px;
  --r-small: 8px;
  --r-device-card: 16px;
  --r-pill: 999px;
  --r-circle: 50%;
  --shadow-window: 0 1px 2px rgba(26,25,24,.04),0 22px 48px -22px rgba(26,25,24,.16),0 64px 120px -48px rgba(26,25,24,.14);
  --shadow-phone: 0 2px 4px rgba(26,25,24,.06),0 14px 28px -12px rgba(26,25,24,.2),0 40px 80px -24px rgba(26,25,24,.3);
  --shadow-soft: 0 1px 2px rgba(26,25,24,.05);
  --shadow-fab: 0 10px 30px -10px rgba(26,25,24,.45);
  --header-h: 72px;
  --peek: 36px;
  --gutter: 48px;
  --wrap-max: 1440px;
  --reading-max: 820px;
  --section-space: 100px;
  --ease: cubic-bezier(.2,.65,.3,1);
  --speed: .2s;
  --reveal-speed: .65s;
  --feature-period: 8s;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 24px); }
html.nav-open { overflow: hidden; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font-body); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
[hidden] { display: none !important; }
img, svg { vertical-align: middle; max-width: 100%; }
img { height: auto; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button, input, select, textarea { border-radius: var(--r-small); }
button { color: var(--text); }
a { color: inherit; text-decoration: none; }
a, button { -webkit-tap-highlight-color: var(--accent-ring); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: var(--r-small); }
::selection { background: var(--accent-soft); color: var(--text); }
h1, h2, h3, h4, p, figure { margin: 0; }
h1, h2, h3 { font-family: var(--font-display); font-weight: var(--weight-normal); text-wrap: balance; overflow-wrap: break-word; }
h1 { font-size: clamp(34px,3.4vw,48px); line-height: 1.15; letter-spacing: -.02em; }
h2 { font-size: clamp(26px,2.8vw,36px); line-height: 1.25; letter-spacing: -.02em; }
h3 { font-size: 22px; line-height: 1.4; }
strong { font-weight: var(--weight-medium); }
code, pre, kbd { font-family: var(--font-mono); }
code { overflow-wrap: anywhere; font-size: .875em; }
pre { max-width: 100%; overflow-x: auto; padding: 24px; background: var(--bg-panel-2); color: var(--on-dark); border-radius: var(--r-inner); line-height: 1.8; }
pre code { white-space: pre; overflow-wrap: normal; font-size: 13px; }
hr { border: 0; border-top: 1px solid var(--border); margin-block: 32px; }
section, article, main, aside, nav, .grid > *, .hero-grid > *, .footer-grid > * { min-width: 0; }
svg, .tag-dot, .mode-dot, .brand-mark { flex-shrink: 0; }
.nowrap { white-space: nowrap; }
.muted { color: var(--text-muted); }
.eyebrow { font-size: 14px; font-weight: var(--weight-medium); }
.text-link { color: var(--accent); text-decoration: underline; text-underline-offset: 5px; }
.text-link:hover { color: var(--accent-dark); }
.wrap { width: 100%; max-width: var(--wrap-max); margin-inline: auto; padding-inline: var(--gutter); }
.reading { width: 100%; max-width: calc(var(--reading-max) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-top: var(--section-space); padding-bottom: var(--section-space); }
.section-head { margin-bottom: 36px; }
.section-head h2 { margin-top: 12px; }
.section-head p { margin-top: 18px; max-width: 45em; color: var(--text-muted); }
.grid { display: grid; gap: 24px; grid-template-columns: repeat(2,minmax(0,1fr)); }
.stack { display: grid; gap: 24px; }
.prose, .article-body { min-width: 0; line-height: 1.9; overflow-wrap: break-word; }
.prose p + p, .article-body p + p { margin-top: 20px; }
.prose h2, .article-body h2 { margin-top: 56px; margin-bottom: 24px; }
.prose h3, .article-body h3 { margin-top: 32px; margin-bottom: 16px; }
.prose li + li, .article-body li + li { margin-top: 10px; }
.prose a, .article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.prose :not(pre) > code, .article-body :not(pre) > code { background: var(--accent-soft); color: var(--text); padding: 2px 5px; border-radius: var(--r-small); }
.panel, .card { min-width: 0; padding: 28px; border: 1px solid var(--border); border-radius: var(--r-card); background: var(--bg-panel); color: var(--text); }
.card h3 + p, .panel h3 + p { margin-top: 14px; color: var(--text-muted); }
.card > .text-link, .panel > .text-link { display: inline-block; margin-top: 24px; }
.card-lift { transition: transform var(--speed) var(--ease),box-shadow var(--speed); }
.card-lift:hover { transform: translateY(-3px); box-shadow: var(--shadow-window); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 12px 24px; border: 1px solid var(--clear); border-radius: var(--r-btn); font-size: 16px; font-weight: var(--weight-medium); line-height: 1.5; text-align: center; transition: background-color var(--speed),border-color var(--speed),transform var(--speed); }
.btn svg { width: 18px; height: 18px; transition: transform var(--speed); }
.btn-primary { background: var(--accent); color: var(--on-dark); }
.btn-primary:hover, .btn-primary.is-hover { background: var(--accent-dark); color: var(--on-dark); }
.btn-primary:hover svg { transform: translateX(2px); }
.btn-ghost { border-color: var(--border); background: var(--bg-panel); color: var(--text); }
.btn-ghost:hover, .btn-ghost.is-hover { border-color: var(--border-strong); background: var(--bg); color: var(--text); }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { background: var(--border); color: var(--text-muted); border-color: var(--border); cursor: not-allowed; transform: none; }
.btn-small { min-height: 44px; padding: 10px 18px; font-size: 14px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.skip { position: absolute; left: 16px; top: -60px; padding: 8px 14px; background: var(--text); color: var(--on-dark); border-radius: var(--r-small); z-index: 60; }
.skip:focus { top: 12px; }

#site-header, .site-header { position: sticky; top: 0; z-index: 40; background: var(--bg-panel); color: var(--text); border-bottom: 1px solid var(--border); }
.header-shell { position: relative; width: 100%; max-width: min(100%,calc(1280px + var(--gutter) * 2)); margin-inline: auto; padding-inline: var(--gutter); }
.bar { height: var(--header-h); display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; font-family: var(--font-display); font-size: 17px; font-weight: var(--weight-medium); letter-spacing: -.01em; }
.brand-mark { width: 32px; height: 32px; }
.mainnav { min-width: 0; margin-left: auto; }
.mainnav ul { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 0; }
.mainnav li { display: flex; align-items: center; font-size: 14.5px; white-space: nowrap; }
.mainnav li + li::before { content: "·"; color: var(--text-faint); margin-inline: 11px; }
.mainnav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--text-muted); transition: color var(--speed); }
.mainnav a:hover { color: var(--text); }
.mainnav a[aria-current="page"] { color: var(--accent); }
.header-tools { display: flex; align-items: center; gap: 24px; flex-shrink: 0; }
.bar-divider { width: 1px; height: 20px; background: var(--border); color: var(--text); }
.lang-box { position: relative; }
.lang { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 44px; padding: 6px 2px; background: var(--clear); color: var(--text); border: 0; font-size: 14px; white-space: nowrap; }
.lang svg { width: 16px; height: 16px; color: var(--text-muted); }
.lang-caret { color: var(--text-muted); font-size: 11px; }
.lang-menu { position: absolute; right: 0; top: calc(100% + 8px); min-width: 180px; padding: 8px; background: var(--bg-panel); color: var(--text); border: 1px solid var(--border); border-radius: var(--r-inner); box-shadow: var(--shadow-window); z-index: 4; }
.lang-menu a { display: flex; align-items: center; min-height: 44px; padding: 10px 14px; border-radius: var(--r-small); }
.lang-menu a:hover, .lang-menu a[aria-current] { background: var(--accent-soft); color: var(--accent); }
.menu-toggle { display: none; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; border: 1px solid var(--border); background: var(--bg-panel); color: var(--text); border-radius: var(--r-inner); }
.menu-toggle svg { width: 22px; height: 22px; }
.mobile-nav { position: absolute; left: 0; right: 0; top: var(--header-h); z-index: 3; padding: 16px var(--gutter) 24px; max-height: calc(100dvh - var(--header-h)); overflow-y: auto; overscroll-behavior: contain; border-bottom: 1px solid var(--border); background: var(--bg-panel); color: var(--text); }
.mobile-nav ul { list-style: none; margin: 0; padding: 0; }
.mobile-nav a { display: flex; align-items: center; width: 100%; min-height: 48px; padding: 12px 14px; border-radius: var(--r-small); }
.mobile-nav a:hover, .mobile-nav a[aria-current] { background: var(--accent-soft); color: var(--accent); }
.mobile-language-title { margin-top: 18px; padding: 12px 14px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 13px; }
.nav-veil { position: fixed; inset: var(--header-h) 0 0; z-index: 1; border: 0; background: var(--veil); color: var(--text); border-radius: 0; }
.preview-language { position: relative; }
.preview-language > summary { list-style: none; cursor: pointer; }
.preview-language > summary::-webkit-details-marker { display: none; }
.preview-mobile { display: none; }

.site-footer, #site-footer { background: var(--bg-panel); color: var(--text); border-top: 1px solid var(--border); }
.footer-inner { padding-top: 72px; padding-bottom: 100px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.2fr 1fr; gap: 48px; }
.footer-brand p { max-width: 25em; margin-top: 20px; color: var(--text-muted); font-size: 14px; }
.footer-title { font-size: 14px; font-weight: var(--weight-medium); margin-bottom: 16px; }
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links a { display: inline-block; padding-block: 6px; font-size: 14px; color: var(--text-muted); }
.footer-links a:hover, .footer-links a[aria-current] { color: var(--accent); }
.footer-bottom { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; color: var(--text-muted); font-size: 13px; }
.reveal { opacity: 1; transform: none; }
html.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(18px); }
html.reveal-ready .reveal { transition: opacity var(--reveal-speed) var(--ease),transform var(--reveal-speed) var(--ease); }

.hero { min-height: calc(100vh - var(--header-h) - var(--peek)); min-height: calc(100svh - var(--header-h) - var(--peek)); display: grid; align-content: center; padding-top: 40px; padding-bottom: 40px; overflow-x: clip; }
.hero-grid { display: grid; grid-template-columns: minmax(0,56fr) minmax(0,44fr); align-items: center; }
.stage-col { grid-column: 1; grid-row: 1; min-width: 0; }
.hero-copy { grid-column: 2; grid-row: 1; padding-left: 64px; min-width: 0; }
.tag { display: inline-flex; align-items: center; gap: 10px; min-height: 32px; padding: 5px 14px 5px 12px; max-width: 100%; background: var(--bg-panel); color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--r-pill); font-size: 13px; box-shadow: var(--shadow-soft); }
.tag-dot { width: 7px; height: 7px; border-radius: var(--r-circle); background: var(--accent); color: var(--on-dark); box-shadow: 0 0 0 4px var(--accent-ring); }
.hero h1 { margin-top: 24px; font-size: clamp(30px,3.4vw,48px); }
.lede { margin-top: 28px; max-width: 31em; font-size: 16.5px; line-height: 1.75; color: var(--text-muted); }
.lede strong { color: var(--text); }
.plats { margin-top: 28px; }
.plats-cap { font-size: 12.5px; color: var(--text-muted); letter-spacing: .02em; }
.plats ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 0; padding: 0; list-style: none; }
.plat { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 34px; padding: 6px 13px 6px 11px; border: 1px solid var(--border); border-radius: var(--r-pill); background: var(--bg-panel); color: var(--text-muted); font-size: 13px; transition: color var(--speed),border-color var(--speed); }
.plat svg { width: 15px; height: 15px; color: var(--text); }
.plat .tux { width: 14px; height: 16px; }
.plat:hover { color: var(--text); border-color: var(--border-strong); }

@media (max-width: 1100px) {
  .mainnav { display: none; }
  .header-tools { margin-left: auto; gap: 14px; }
  .menu-toggle { display: inline-flex; }
  .bar-divider { display: none; }
  .preview-mobile { display: block; }
  .preview-mobile > summary { list-style: none; display: inline-flex; }
  .preview-mobile > summary::-webkit-details-marker { display: none; }
}
@media (min-width: 1101px) {
  .mobile-nav, .nav-veil { display: none; }
}
@media (max-width: 1240px) {
  .hero-grid { grid-template-columns: minmax(0,1fr); row-gap: 56px; }
  .hero-copy { grid-column: 1; grid-row: 1; padding-left: 0; }
  .stage-col { grid-column: 1; grid-row: 2; }
  .stage { margin-inline: auto; }
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 36px; }
}
@media (max-width: 768px) {
  :root { --gutter: 20px; --section-space: 64px; }
  h1, .hero h1 { font-size: clamp(24px,5.4vw,30px); }
  h2 { font-size: 28px; }
  .bar { gap: 16px; }
  .grid { grid-template-columns: minmax(0,1fr); }
}
@media (max-width: 640px) {
  .tilt, [data-tilt] { transform: none !important; }
  .brand { font-size: 15px; gap: 8px; }
  .header-tools { gap: 8px; margin-left: auto; }
  .lang { font-size: 13px; gap: 4px; }
  .lang svg { display: none; }
  .footer-grid { grid-template-columns: minmax(0,1fr); gap: 32px; }
  .card, .panel { padding: 22px; }
  .hero { padding-top: 36px; padding-bottom: 36px; }
  .hero-grid { row-gap: 36px; }
  .cta { margin-top: 24px; gap: 10px; }
  .btn { padding-inline: 18px; }
  .lede { font-size: 15px; margin-top: 24px; }
  .tag { font-size: 11.5px; gap: 8px; }
  .plats ul { gap: 6px; }
  .plat { font-size: 12px; padding-inline: 10px; }
}
@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; }
}