:root {
  --c-bg: #FFFFFF;
  --c-panel: #F5F5F4;
  --c-dark: #FFFFFF;
  --c-on-dark: #121312;
  --c-border: #E6E6E4;
  --c-accent: #A8F27C;
  --c-accent-dark: #3D7A1E;
  --c-text: #121312;
  --c-muted: #5E625D;
  --c-success: #2E9B4F;
  --c-warn: #C98A0E;
  --c-error: #D6423A;
  --c-metal: #1E201E;
  --c-metal-hi: #2A2C2A;
  --c-metal-side: #151615;
  --c-metal-deep: #070807;
  --c-key: #2A2C2A;
  --c-ink-dark-strong: rgba(18,19,18,.94);
  --c-ink-dark: rgba(18,19,18,.72);
  --c-ink-dark-faint: rgba(18,19,18,.55);
  --c-line-dark: rgba(18,19,18,.13);
  --c-line-dark-strong: rgba(18,19,18,.72);
  --c-sheen: rgba(18,19,18,.07);
  --c-lamp: rgba(168,242,124,.085);
  --c-lamp-soft: rgba(168,242,124,.03);
  --c-shadow: rgba(0,0,0,.82);
  --c-clear: transparent;
  --font-display: "Inter","Noto Sans SC","PingFang SC","Hiragino Sans","Apple SD Gothic Neo","Malgun Gothic","Microsoft YaHei",system-ui,sans-serif;
  --font-body: "Inter","Noto Sans SC","PingFang SC","Hiragino Sans","Apple SD Gothic Neo","Malgun Gothic","Microsoft YaHei",system-ui,sans-serif;
  --font-mono: "JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --fs-body: 16px;
  --fs-small: 14px;
  --fs-h1: clamp(34px,calc(2.2vw + 16px),48px);
  --fs-h2: clamp(26px,3vw,38px);
  --fs-h3: 22px;
  --r-sheet: 40px;
  --r-panel: 28px;
  --r-drawer: 32px;
  --r-card: 24px;
  --r-btn: 10px;
  --r-code: 12px;
  --r-pill: 999px;
  --r-circle: 50%;
  --r-device: 50;
  --r-bezel: 42;
  --r-screen: 40;
  --r-device-card: 16;
  --r-device-seg: 12;
  --r-device-segment: 9;
  --r-device-key: 2;
  --gutter: 32px;
  --wrap: 1280px;
  --reading: 840px;
  --nav-h: 76px;
  --peek: 64px;
  --section-space: 96px;
  --ease: .2s ease;
  --reveal-duration: .55s;
  --feature-duration: 7s;
}
*,*::before,*::after { box-sizing: border-box; }
html {
  background: var(--c-bg);
  color: var(--c-text);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
}
html.nav-open { overflow: hidden; }
body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font: 400 var(--fs-body)/1.75 var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
[hidden] { display: none !important; }
a { color: inherit; text-underline-offset: .2em; }
button,input,select,textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
img,svg { max-width: 100%; vertical-align: middle; }
img { height: auto; }
svg { flex-shrink: 0; }
ul,ol { padding-inline-start: 1.5em; }
h1,h2,h3,h4,p,pre,blockquote { margin-top: 0; }
h1,h2,h3,h4 {
  font-family: var(--font-display);
  text-wrap: balance;
  overflow-wrap: break-word;
}
h1 { font-size: var(--fs-h1); line-height: 1.14; font-weight: 900; letter-spacing: -.015em; }
h2 { font-size: var(--fs-h2); line-height: 1.25; font-weight: 800; letter-spacing: -.015em; margin-bottom: 24px; }
h3 { font-size: var(--fs-h3); line-height: 1.4; font-weight: 800; margin-bottom: 14px; }
p { margin-bottom: 1.25em; }
strong { font-weight: 700; }
small,.small { font-size: var(--fs-small); }
code,kbd,pre { font-family: var(--font-mono); }
code { overflow-wrap: anywhere; }
p code,li code,td code { background: var(--c-panel); color: var(--c-text); padding: .1em .3em; border-radius: var(--r-btn); }
pre {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  padding: 22px;
  background: var(--c-panel);
  color: var(--c-text);
  border-radius: var(--r-code);
  font-size: var(--fs-small);
  line-height: 1.8;
  tab-size: 2;
}
pre code { overflow-wrap: normal; word-break: normal; white-space: pre; }
:focus-visible { outline: 2px solid var(--c-accent-dark); outline-offset: 4px; }
::selection { background: var(--c-accent); color: var(--c-text); }
.wrap { width: 100%; max-width: calc(var(--wrap) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.reading { width: 100%; max-width: calc(var(--reading) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-top: var(--section-space); padding-bottom: var(--section-space); }
.grid { display: grid; gap: 24px; grid-template-columns: repeat(2,minmax(0,1fr)); }
.grid > *, .hero-grid > *, .footer-grid > *, .feature-browser > *, .prose > * { min-width: 0; }
.stack > * + * { margin-top: 24px; }
.muted { color: var(--c-muted); }
.mono { font-family: var(--font-mono); }
.keep { white-space: nowrap; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.prose { min-width: 0; }
.prose h2 { margin-top: 64px; }
.prose h3 { margin-top: 36px; }
.prose p,.prose li { overflow-wrap: break-word; }
.prose a { color: var(--c-accent-dark); }
.panel,.surface-card {
  padding: 32px;
  background: var(--c-panel);
  color: var(--c-text);
  border-radius: var(--r-panel);
  min-width: 0;
}
.surface-card { background: var(--c-bg); color: var(--c-text); border: 1px solid var(--c-border); border-radius: var(--r-card); }
.cta { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 54px; padding: 12px 26px;
  border: 0; border-radius: var(--r-btn);
  background: var(--c-text); color: var(--c-bg);
  font: 700 16px/1.4 var(--font-body);
  text-align: center; text-decoration: none;
  transition: background-color var(--ease),color var(--ease),transform var(--ease);
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn-main { background: var(--c-accent); color: var(--c-text); }
.btn-main:hover,.btn-main.is-hover { background: var(--c-panel); color: var(--c-text); transform: translateY(-1px); }
.hero .btn-main:hover { background: var(--c-bg); color: var(--c-text); }
.btn-line { background: var(--c-clear); color: var(--c-on-dark); box-shadow: inset 0 0 0 1.5px var(--c-line-dark-strong); }
.btn-line:hover { background: var(--c-sheen); color: var(--c-on-dark); }
.btn-outline { background: var(--c-bg); color: var(--c-text); box-shadow: inset 0 0 0 1px var(--c-border); }
.btn-outline:hover { background: var(--c-panel); color: var(--c-text); }
.btn:active { transform: translateY(1px); }
.btn:disabled,.btn[aria-disabled="true"] { background: var(--c-panel); color: var(--c-muted); transform: none; }
.btn.is-focus { outline: 2px solid var(--c-accent-dark); outline-offset: 4px; }
.topbar { position: relative; z-index: 40; background: var(--c-dark); color: var(--c-on-dark); }
.home-page .topbar,.preview-page .topbar { position: absolute; inset: 0 0 auto; background: var(--c-clear); color: var(--c-on-dark); }
.header-wrap {
  width: 100%; max-width: min(100%,calc(1280px + var(--gutter) * 2));
  margin-inline: auto; padding-inline: var(--gutter);
}
.topbar-in { height: var(--nav-h); display: flex; align-items: center; gap: 36px; }
.brand {
  display: inline-flex; align-items: center; gap: 11px; margin-right: auto;
  flex-shrink: 0; text-decoration: none; color: var(--c-on-dark);
  font: 800 18px/1 var(--font-display); letter-spacing: -.01em;
}
.brand img { width: 34px; height: 34px; flex-shrink: 0; }
.mainnav { min-width: 0; }
.mainnav ul { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.mainnav a {
  display: flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px 12px; border-radius: var(--r-btn);
  color: var(--c-ink-dark); font: 500 14.5px/1 var(--font-body);
  text-decoration: none; white-space: nowrap;
  transition: color var(--ease),background-color var(--ease);
}
.mainnav svg,.mobile-drawer svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.mainnav a:hover { color: var(--c-on-dark); background: var(--c-sheen); }
.mainnav a[aria-current="page"] { color: var(--c-on-dark); }
.mainnav a[aria-current="page"] svg { stroke: var(--c-accent); }
.header-tools { display: flex; align-items: center; gap: 10px; flex-shrink: 0; margin-left: auto; }
.language-control { position: relative; }
.lang {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px 15px; min-height: 36px; border: 0; border-radius: var(--r-pill);
  background: var(--c-clear); color: var(--c-on-dark); box-shadow: inset 0 0 0 1px var(--c-line-dark);
  font: 500 14px/1 var(--font-body);
}
.lang svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.lang:hover { background: var(--c-sheen); color: var(--c-on-dark); }
.lang-short { display: none; }
.language-menu {
  position: absolute; top: calc(100% + 12px); right: 0; width: 190px; padding: 8px;
  border: 1px solid var(--c-border); border-radius: var(--r-code);
  background: var(--c-bg); color: var(--c-text);
}
.language-menu a { display: flex; align-items: center; min-height: 44px; padding: 8px 14px; border-radius: var(--r-btn); text-decoration: none; }
.language-menu a:hover,.language-menu a[aria-current="true"] { background: var(--c-panel); color: var(--c-text); }
.menu-toggle {
  display: none; align-items: center; justify-content: center; min-width: 44px; min-height: 44px;
  border: 1px solid var(--c-line-dark); border-radius: var(--r-btn);
  background: var(--c-dark); color: var(--c-on-dark);
}
.menu-toggle svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.mobile-drawer { display: none; }
.menu-veil { position: fixed; inset: var(--nav-h) 0 0; z-index: 30; border: 0; background: var(--c-shadow); color: var(--c-on-dark); }
.topbar :focus-visible,.hero :focus-visible { outline-color: var(--c-accent); }
.hero {
  position: relative; overflow: hidden;
  min-height: calc(100vh - var(--peek)); min-height: calc(100svh - var(--peek));
  padding-top: calc(var(--nav-h) + 24px); padding-bottom: 24px;
  display: grid; align-content: center;
  background-color: var(--c-dark); color: var(--c-on-dark);
  background-image: radial-gradient(ellipse 44% 60% at 73% 48%,var(--c-lamp),var(--c-clear) 72%),radial-gradient(ellipse 70% 42% at 78% 104%,var(--c-lamp-soft),var(--c-clear) 70%);
}
.hero-grid { display: grid; grid-template-columns: minmax(0,45fr) minmax(0,55fr); gap: 32px; align-items: center; }
.hero-copy { max-width: 560px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 28px; padding: 0; list-style: none; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; max-width: 100%;
  padding: 8px 13px; border-radius: var(--r-pill);
  box-shadow: inset 0 0 0 1px var(--c-line-dark);
  font: 500 12.5px/1.35 var(--font-body); color: var(--c-ink-dark);
  overflow-wrap: anywhere;
}
.chip-dot { width: 6px; height: 6px; border-radius: var(--r-circle); background: var(--c-accent); flex-shrink: 0; }
.hero h1 { margin: 0; font: 900 var(--fs-h1)/1.14 var(--font-display); letter-spacing: -.015em; color: var(--c-on-dark); }
.hero h1 > span { display: block; }
.hero h1 .h1-accent { color: var(--c-accent-dark); }
.lede { margin: 22px 0 34px; max-width: 31em; font: 400 17px/1.75 var(--font-body); color: var(--c-ink-dark); }
.lede strong { color: var(--c-on-dark); }
.plat { margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--c-line-dark); max-width: 520px; }
.plat-label { display: block; margin-bottom: 14px; font: 500 11.5px/1 var(--font-mono); letter-spacing: .06em; color: var(--c-ink-dark); }
.plat ul { display: flex; flex-wrap: wrap; gap: 10px 26px; margin: 0; padding: 0; list-style: none; }
.plat a { display: inline-flex; align-items: center; gap: 8px; font: 600 14px/1 var(--font-body); color: var(--c-ink-dark); text-decoration: none; }
.plat svg { width: 17px; height: 17px; flex-shrink: 0; }
.plat a:hover { color: var(--c-on-dark); }
.hero-visual { display: flex; justify-content: flex-end; min-width: 0; }
.rig {
  --u: min(1px,calc((100vw - 64px) * .55 / 620),calc((100vh - 236px) / 664));
  --u: min(1px,calc((100vw - 64px) * .55 / 620),calc((100svh - 236px) / 664));
  --tilt: -6deg;
  position: relative; flex: none; width: calc(620 * var(--u)); height: calc(664 * var(--u));
}
.rig-shadow { position: absolute; left: calc(40 * var(--u)); top: calc(610 * var(--u)); width: calc(580 * var(--u)); height: calc(56 * var(--u)); border-radius: var(--r-circle); background: radial-gradient(closest-side,var(--c-shadow),var(--c-clear)); color: var(--c-on-dark); }
.device { position: absolute; z-index: 1; left: calc(260 * var(--u)); top: calc(16 * var(--u)); width: calc(300 * var(--u)); height: calc(610 * var(--u)); transform: rotate(var(--tilt)); }
.slab { position: absolute; inset: 0; transform: translate(calc(8 * var(--u)),calc(6 * var(--u))); background: var(--c-metal-side); color: var(--c-on-dark); border-radius: calc(var(--r-device) * var(--u)); }
.key { position: absolute; right: calc(-3 * var(--u)); width: calc(4 * var(--u)); border-radius: calc(var(--r-device-key) * var(--u)); background: var(--c-key); color: var(--c-on-dark); }
.key-vol { top: calc(132 * var(--u)); height: calc(72 * var(--u)); }
.key-pow { top: calc(220 * var(--u)); height: calc(44 * var(--u)); }
.frame { position: absolute; inset: 0; padding: calc(11 * var(--u)); border-radius: calc(var(--r-device) * var(--u)); background: linear-gradient(150deg,var(--c-metal-hi),var(--c-metal) 42%); color: var(--c-on-dark); box-shadow: inset 0 0 0 1px var(--c-sheen); }
.bezel { height: 100%; padding: calc(2 * var(--u)); border-radius: calc(var(--r-bezel) * var(--u)); background: var(--c-metal-deep); color: var(--c-on-dark); }
.screen { height: 100%; display: flex; flex-direction: column; padding: 0 calc(16 * var(--u)) calc(10 * var(--u)); border-radius: calc(var(--r-screen) * var(--u)); background: var(--c-bg); color: var(--c-text); overflow: hidden; font-family: var(--font-body); }
.sbar { position: relative; flex: none; height: calc(34 * var(--u)); display: flex; align-items: center; justify-content: space-between; padding: 0 calc(8 * var(--u)); color: var(--c-text); }
.cam { position: absolute; left: 50%; top: calc(11 * var(--u)); width: calc(12 * var(--u)); height: calc(12 * var(--u)); margin-left: calc(-6 * var(--u)); border-radius: var(--r-circle); background: var(--c-metal-deep); color: var(--c-bg); }
.sbar-key { width: calc(14 * var(--u)); height: calc(14 * var(--u)); fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; }
.sbar-right { display: flex; align-items: center; gap: calc(5 * var(--u)); }
.ic-signal { width: calc(14 * var(--u)); height: calc(10 * var(--u)); fill: currentColor; }
.ic-wifi { width: calc(13 * var(--u)); height: calc(10 * var(--u)); fill: currentColor; }
.ic-batt { width: calc(21 * var(--u)); height: calc(10 * var(--u)); }
.b-shell { fill: none; stroke: currentColor; stroke-width: 1.2; }
.b-fill { fill: currentColor; }
.shead { display: flex; align-items: baseline; justify-content: space-between; padding: calc(6 * var(--u)) calc(4 * var(--u)) calc(12 * var(--u)); }
.shead-title { font: 800 calc(22 * var(--u))/1.2 var(--font-display); letter-spacing: -.01em; }
.shead-file { font: 500 calc(10 * var(--u))/1 var(--font-mono); color: var(--c-muted); }
.glabel { margin: 0 calc(4 * var(--u)) calc(7 * var(--u)); font: 600 calc(10.5 * var(--u))/1.2 var(--font-body); letter-spacing: .04em; color: var(--c-muted); }
.seg { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); padding: calc(3 * var(--u)); margin-bottom: calc(12 * var(--u)); border-radius: calc(var(--r-device-seg) * var(--u)); background: var(--c-panel); color: var(--c-text); }
.seg-item { display: flex; align-items: center; justify-content: center; gap: calc(3 * var(--u)); height: calc(30 * var(--u)); border-radius: calc(var(--r-device-segment) * var(--u)); font: 600 calc(11.5 * var(--u))/1 var(--font-body); color: var(--c-muted); white-space: nowrap; }
.seg-item i { font-style: normal; font-weight: 500; }
.seg-item.is-on { background: var(--c-accent); color: var(--c-text); font-weight: 700; }
.device-card { margin-bottom: calc(12 * var(--u)); border: 1px solid var(--c-border); border-radius: calc(var(--r-device-card) * var(--u)); }
.row { display: flex; align-items: center; justify-content: space-between; gap: calc(10 * var(--u)); min-height: calc(42 * var(--u)); padding: calc(8 * var(--u)) calc(12 * var(--u)); }
.row + .row { border-top: 1px solid var(--c-border); }
.rname { font: 600 calc(12.5 * var(--u))/1.25 var(--font-body); }
.rsub { display: block; margin-top: calc(2 * var(--u)); font: 400 calc(10 * var(--u))/1.3 var(--font-body); color: var(--c-muted); }
.sw { position: relative; flex: none; width: calc(34 * var(--u)); height: calc(20 * var(--u)); border-radius: var(--r-pill); background: var(--c-border); color: var(--c-text); }
.sw::after { content: ""; position: absolute; top: calc(2 * var(--u)); left: calc(2 * var(--u)); width: calc(16 * var(--u)); height: calc(16 * var(--u)); border-radius: var(--r-circle); background: var(--c-bg); color: var(--c-text); }
.sw.is-on { background: var(--c-accent); color: var(--c-text); }
.sw.is-on::after { left: calc(16 * var(--u)); }
.rmeta { display: inline-flex; align-items: center; gap: calc(3 * var(--u)); flex: none; font: 500 calc(11 * var(--u))/1 var(--font-body); color: var(--c-muted); }
.rmeta svg { width: calc(12 * var(--u)); height: calc(12 * var(--u)); fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.rmeta.is-act { color: var(--c-accent-dark); }
.yaml { margin-top: auto; padding: calc(9 * var(--u)) calc(12 * var(--u)); border-radius: calc(var(--r-device-seg) * var(--u)); background: var(--c-panel); color: var(--c-text); font: 500 calc(10.5 * var(--u))/1.7 var(--font-mono); }
.yaml .k { color: var(--c-accent-dark); }
.homebar { flex: none; width: calc(96 * var(--u)); height: calc(4 * var(--u)); margin: calc(10 * var(--u)) auto 0; border-radius: var(--r-pill); background: var(--c-text); color: var(--c-bg); opacity: .85; }
.cat { position: absolute; z-index: 2; overflow: visible; left: calc(44 * var(--u)); top: calc(476 * var(--u)); width: calc(290 * var(--u)); height: calc(185 * var(--u)); }
.cat-fill { fill: var(--c-metal-deep); stroke: none; }
.cat-line { fill: none; stroke: var(--c-bg); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.cat-tip { fill: none; stroke: var(--c-accent); stroke-width: 2.2; stroke-linecap: round; }
.sheet { position: relative; min-height: 40vh; padding-top: 22px; padding-bottom: 120px; background: var(--c-bg); color: var(--c-text); border-radius: var(--r-sheet) var(--r-sheet) 0 0; }
.home-page,.preview-page { background: var(--c-dark); color: var(--c-text); }
.facts { display: flex; justify-content: center; }
.facts-bar { display: inline-flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 10px 22px; padding: 12px 26px; border-radius: var(--r-pill); background: var(--c-panel); color: var(--c-muted); font: 500 13px/1.2 var(--font-mono); }
.facts-bar b { font-weight: 700; color: var(--c-text); }
.facts-sep { width: 5px; height: 5px; flex-shrink: 0; border-radius: var(--r-circle); background: var(--c-accent-dark); }
.quickstart { padding: 64px; background: var(--c-accent); color: var(--c-text); border-radius: var(--r-drawer); }
.quickstart p { max-width: 42em; }
.quickstart .btn { background: var(--c-text); color: var(--c-bg); }
.steps { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 32px; padding: 0; list-style: none; counter-reset: setup; }
.steps li { min-width: 0; counter-increment: setup; }
.steps li::before { content: counter(setup); display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; margin-bottom: 18px; border: 1px solid currentColor; border-radius: var(--r-circle); font: 700 14px/1 var(--font-mono); }
.site-footer { padding-top: 72px; padding-bottom: 32px; background: var(--c-dark); color: var(--c-ink-dark); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .9fr 1.4fr .7fr; gap: 48px; }
.footer-brand p { max-width: 26em; margin-top: 22px; font-size: var(--fs-small); }
.site-footer h2 { color: var(--c-on-dark); font-size: 15px; margin-bottom: 22px; letter-spacing: 0; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li + li { margin-top: 9px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--c-on-dark); text-decoration: underline; }
.site-footer :focus-visible { outline-color: var(--c-accent); }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 18px 32px; justify-content: space-between; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--c-line-dark); font-size: 13px; }
.footer-legal { display: flex; gap: 22px; }
.reveal { opacity: 1; transform: none; }
.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(14px); }
.reveal-ready .reveal { transition: opacity var(--reveal-duration) ease,transform var(--reveal-duration) ease; }
.reveal-ready .reveal.shown { opacity: 1; transform: none; }
.decorated { position: relative; overflow-x: clip; }
@media (max-width: 1279px) {
  .topbar-in { gap: 20px; }
  .mainnav { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-tools { margin-left: auto; }
  .mobile-drawer:not([hidden]) {
    display: block; position: absolute; top: var(--nav-h); inset-inline: 0; z-index: 2;
    padding: 16px var(--gutter) 28px;
    max-height: calc(100vh - var(--nav-h)); max-height: calc(100dvh - var(--nav-h));
    overflow-y: auto; overscroll-behavior: contain;
    background: var(--c-dark); color: var(--c-on-dark);
    border-top: 1px solid var(--c-line-dark);
  }
  .mobile-drawer ul { list-style: none; margin: 0; padding: 0; }
  .mobile-drawer a { width: 100%; display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 12px 14px; text-decoration: none; border-radius: var(--r-btn); }
  .mobile-drawer a:hover,.mobile-drawer a[aria-current="page"] { background: var(--c-panel); color: var(--c-on-dark); }
  .mobile-drawer a[aria-current="page"] svg { color: var(--c-accent); }
  .drawer-languages { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--c-line-dark); }
}
@media (max-width: 960px) {
  .hero { padding-top: 132px; padding-bottom: 40px; }
  .hero-grid { grid-template-columns: minmax(0,1fr); gap: 44px; }
  .hero-copy { max-width: none; }
  .hero h1 { font-size: clamp(26px,7vw,30px); }
  .lede { font-size: 16px; }
  .hero-visual { justify-content: center; }
  .rig { --u: calc(90vw / 620); --tilt: -3deg; }
  .cat { left: calc(31 * var(--u)); }
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 36px; }
}
@media (max-width: 768px) {
  :root { --gutter: 24px; --section-space: 64px; --fs-h1: clamp(24px,5vw,30px); }
  .quickstart { padding: 32px; }
  .steps { grid-template-columns: minmax(0,1fr); gap: 20px; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .grid { grid-template-columns: minmax(0,1fr); }
  .tilt,.decorative-tilt { transform: none !important; }
  .panel,.surface-card { padding: 24px; }
  .chips { gap: 8px; }
  .lang-long { display: none; }
  .lang-short { display: inline; }
  .lang { padding: 10px 12px; }
  .brand { font-size: 16px; gap: 8px; }
  .brand img { width: 32px; height: 32px; }
  .topbar-in { gap: 8px; }
  .header-tools { gap: 8px; margin-left: auto; }
  .footer-grid { grid-template-columns: minmax(0,1fr); }
  .quickstart { padding: 28px 24px; }
}
@media (max-width: 520px) {
  .cta .btn { flex: 1 1 auto; padding-inline: 18px; }
  .plat ul { gap: 12px 18px; }
  .facts-bar { border-radius: var(--r-panel); margin-inline: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { transition: none !important; animation: none !important; }
  .reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
}