:root {
  --bg: #FFFFFF;
  --bg-panel: #F7F7F8;
  --bg-panel-2: #F3EDFF;
  --border: #E4E4E7;
  --border-strong: #D4D4D8;
  --accent: #7A00F5;
  --accent-dark: #5200A8;
  --warm: #FF7A2E;
  --text: #0B0B0C;
  --text-muted: #5B5B63;
  --text-faint: #8A8A93;
  --device-ink: #3F3F46;
  --on-dark: #FFFFFF;
  --success: #1F9D55;
  --idle: #A1A1AA;
  --warn: #C77700;
  --error: #D92D20;
  --shadow-ink: rgba(11, 11, 12, .05);
  --shadow-tint: rgba(82, 0, 168, .14);
  --veil: rgba(11, 11, 12, .36);
  --clear: transparent;
  --radius: 0;
  --font-display: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans', 'Yu Gothic', 'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans', 'Yu Gothic', 'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, 'Liberation Mono', monospace;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-strong: 600;
  --fs-h1: clamp(34px, 3.4vw, 48px);
  --fs-h2: clamp(26px, 2.6vw, 36px);
  --fs-h3: 22px;
  --fs-body: 16px;
  --fs-small: 14px;
  --lh-h1: 1.12;
  --ls-h1: -.02em;
  --notice-h: 40px;
  --header-h: 64px;
  --gutter: 64px;
  --content-width: 1200px;
  --reading-width: 800px;
  --header-width: 1280px;
  --section-space: 96px;
  --ease-draw: cubic-bezier(.65, 0, .35, 1);
  --time-fast: .18s;
  --time-reveal: .6s;
  --layer-header: 50;
  --layer-floating: 30;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
html.nav-open { overflow: hidden; }
[hidden] { display: none !important; }
img, svg { max-width: 100%; }
img { height: auto; }
button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }
button { border-radius: var(--radius); }
a { color: var(--accent); text-underline-offset: .2em; }
a:hover { color: var(--accent-dark); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
::selection { background: var(--bg-panel-2); color: var(--text); }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: var(--weight-regular);
  text-wrap: balance;
  overflow-wrap: normal;
}
h1 { font-size: var(--fs-h1); line-height: var(--lh-h1); letter-spacing: var(--ls-h1); }
h2 { font-size: var(--fs-h2); line-height: 1.25; letter-spacing: -.015em; }
h3 { font-size: var(--fs-h3); line-height: 1.4; }
p { margin-top: 0; }
strong { font-weight: var(--weight-medium); }
code, pre, kbd { font-family: var(--font-mono); }
code { overflow-wrap: anywhere; }
pre {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  padding: 24px;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  color: var(--text);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.8;
  tab-size: 2;
}
pre code { white-space: pre; overflow-wrap: normal; word-break: normal; }
hr { border: 0; border-top: 1px solid var(--border); margin-block: 40px; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.keep { white-space: nowrap; }
.muted { color: var(--text-muted); }
.accent { color: var(--accent); }
.mono { font-family: var(--font-mono); }
.wrap {
  width: 100%;
  max-width: calc(var(--content-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--reading { max-width: calc(var(--reading-width) + var(--gutter) * 2); }
.section { padding-top: var(--section-space); padding-bottom: var(--section-space); }
.section--line { border-top: 1px solid var(--border); }
.section__intro { max-width: 680px; margin-bottom: 40px; }
.section__intro h2 { margin-top: 0; margin-bottom: 20px; }
.grid { display: grid; gap: 24px; }
.grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid > *, .hero > *, .footer-grid > *, .prose, .prose div { min-width: 0; }
.stack > * + * { margin-top: 24px; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.panel, .card {
  min-width: 0;
  padding: 32px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.panel--soft { background: var(--bg-panel); color: var(--text); }
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.prose { overflow-wrap: break-word; }
.prose p, .prose li { line-height: 1.9; }
.prose h2 { margin-top: 64px; margin-bottom: 24px; }
.prose h3 { margin-top: 36px; }
.prose :not(pre) > code { font-size: .9em; background: var(--bg-panel); color: var(--text); padding: .12em .3em; }
.prose img { display: block; }
.prose ul, .prose ol { padding-left: 1.5em; }
.decorated, .hero, .manual-band { position: relative; overflow-x: clip; }
.reveal { opacity: 1; transform: none; }
html.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(18px); }
html.reveal-ready .reveal {
  transition: opacity var(--time-reveal) ease, transform var(--time-reveal) ease;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 52px;
  padding: 12px 26px;
  border: 1px solid var(--text);
  border-radius: var(--radius);
  font-size: 16px;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  font-weight: var(--weight-regular);
}
.btn svg { width: 9px; height: 12px; flex-shrink: 0; }
.btn--primary { background: var(--text); color: var(--on-dark); }
.btn--primary:hover, .btn--primary.is-hover { background: var(--accent); border-color: var(--accent); color: var(--on-dark); }
.btn--ghost { background: var(--bg); color: var(--text); }
.btn--ghost:hover, .btn--ghost.is-hover { background: var(--bg-panel); color: var(--text); }
.btn.is-focus { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn:disabled, .btn[aria-disabled="true"] {
  background: var(--bg-panel);
  color: var(--text-muted);
  border-color: var(--border-strong);
  cursor: not-allowed;
}
.cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.notice {
  min-height: var(--notice-h);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding-inline: 20px;
  background: linear-gradient(90deg, var(--accent-dark) 0%, var(--accent) 46%, var(--warm) 100%);
  color: var(--on-dark);
  font-size: 13.5px;
  letter-spacing: .005em;
}
.notice__key { font-family: var(--font-mono); font-size: 12px; }
.notice__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 26px;
  padding: 2px 12px;
  background: var(--text);
  color: var(--on-dark);
  font-size: 13px;
  text-decoration: none;
  flex-shrink: 0;
}
.notice__link:hover { color: var(--on-dark); }
.notice__link svg { width: 8px; height: 10px; flex-shrink: 0; }
#site-header { position: relative; z-index: var(--layer-header); }
.site-header {
  height: var(--header-h);
  background: var(--bg);
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  width: 100%;
  max-width: min(100%, calc(var(--header-width) + var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: 32px;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: var(--weight-medium);
  letter-spacing: -.01em;
}
.brand:hover { color: var(--text); }
.brand__mark { display: block; width: 28px; height: 28px; flex-shrink: 0; }
.nav { display: flex; align-items: center; margin-left: auto; min-width: 0; }
.nav__list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 34px;
}
.nav__link {
  display: block;
  padding-block: 6px;
  color: var(--text-muted);
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
}
.nav__link:hover { color: var(--text); }
.nav__link[aria-current="page"] { color: var(--text); font-weight: var(--weight-medium); }
.header-tools { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.language { position: relative; }
.lang {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 0 0 30px;
  border: 0;
  background: var(--clear);
  color: var(--text);
  font-size: 14px;
  white-space: nowrap;
}
.lang::before { content: ""; position: absolute; left: 0; height: 24px; border-left: 1px solid var(--border); }
.lang__caret { color: var(--text-muted); font-size: 11px; }
.lang__short { display: none; }
.language-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 190px;
  padding: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  z-index: 3;
}
.language-menu a { display: block; padding: 10px 14px; min-height: 44px; color: var(--text); text-decoration: none; }
.language-menu a:hover, .language-menu a[aria-current] { background: var(--bg-panel); color: var(--accent); }
.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.menu-toggle svg { width: 22px; height: 22px; flex-shrink: 0; }
.mobile-drawer {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  max-height: calc(100dvh - var(--header-h));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 16px var(--gutter) 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  z-index: 2;
}
.mobile-drawer ul { list-style: none; margin: 0; padding: 0; }
.mobile-drawer a { display: flex; align-items: center; width: 100%; min-height: 48px; padding: 12px 8px; text-decoration: none; color: var(--text); }
.mobile-drawer a:hover, .mobile-drawer a[aria-current] { background: var(--bg-panel); color: var(--accent); }
.mobile-drawer__languages { border-top: 1px solid var(--border); margin-top: 12px; padding-top: 12px; }
.nav-veil { position: fixed; inset: 0; border: 0; padding: 0; background: var(--veil); color: var(--on-dark); z-index: 0; }
.site-header { position: relative; z-index: 1; }
.hero {
  display: grid;
  grid-template-columns: 736px minmax(0, 1fr);
  column-gap: 80px;
  align-items: center;
  min-height: 740px;
  padding-right: var(--gutter);
}
.hero__art { width: 736px; height: 672px; min-width: 0; }
.device { position: relative; width: 768px; height: 672px; margin-left: -32px; }
.device__grid { position: absolute; inset: 0; width: 100%; height: 100%; display: block; max-width: none; }
.device__grid rect, .device__grid path { fill: none; stroke: var(--border); stroke-width: 1; }
.blk { position: absolute; width: 96px; height: 96px; background: var(--accent); color: var(--on-dark); z-index: 1; }
.blk--ne { left: 672px; top: 96px; }
.blk--ne::before { content: ""; position: absolute; left: 0; top: 40px; width: 56px; height: 12px; background: var(--bg-panel-2); }
.blk--sw { left: 96px; top: 576px; }
.blk__rule { position: absolute; left: 0; width: 54px; height: 6px; background: var(--on-dark); }
.blk__rule--1 { top: 26px; }
.blk__rule--2 { top: 42px; }
.blk__rule--3 { top: 58px; }
.tab { position: absolute; background: var(--bg-panel-2); z-index: 1; }
.tab--ne { left: 672px; top: 192px; width: 96px; height: 14px; }
.tab--sw { left: 96px; top: 560px; width: 48px; height: 16px; }
.cmd {
  position: absolute;
  left: 48px;
  top: 160px;
  z-index: 3;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-inline: 22px;
  background: var(--device-ink);
  color: var(--on-dark);
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .01em;
  white-space: nowrap;
}
.cmd__plus { color: var(--bg-panel-2); }
.cmd__cursor { display: inline-block; width: 9px; height: 18px; margin-left: 2px; background: var(--on-dark); animation: cursor-blink 1.6s steps(1, end) infinite; }
.wire { position: absolute; background: var(--accent); z-index: 2; }
.wire--v { left: 87px; top: 216px; width: 2px; height: 93px; transform-origin: 50% 0; animation: draw-y .4s var(--ease-draw) .2s both; }
.wire--h { left: 87px; top: 307px; width: 105px; height: 2px; transform-origin: 0 50%; animation: draw-x .4s var(--ease-draw) .6s both; }
.cfg {
  position: absolute;
  left: 192px;
  top: 288px;
  z-index: 1;
  width: 576px;
  height: 336px;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: 0 1px 2px var(--shadow-ink), 0 32px 56px -36px var(--shadow-tint);
}
.cfg__bar { height: 40px; flex: none; display: flex; align-items: center; justify-content: space-between; padding-inline: 16px; background: var(--bg-panel); color: var(--text-muted); border-bottom: 1px solid var(--border); }
.cfg__title { display: flex; align-items: center; gap: 14px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.cfg__ctrl { display: flex; gap: 5px; }
.cfg__ctrl span { width: 8px; height: 8px; border: 1px solid var(--border-strong); background: var(--bg); }
.cfg__meta { font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em; color: var(--text-muted); }
.cfg__body { flex: 1; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 12px; padding: 16px; }
.seg { display: flex; flex-direction: column; justify-content: space-between; padding: 14px 16px 15px; border: 1px solid var(--border); background: var(--bg); color: var(--text); min-width: 0; }
.seg__head { display: flex; align-items: center; justify-content: space-between; }
.seg__key { font-family: var(--font-mono); font-size: 12px; font-weight: var(--weight-medium); letter-spacing: .01em; }
.seg__state { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; color: var(--text-muted); }
.dot { width: 7px; height: 7px; background: var(--success); flex-shrink: 0; display: inline-block; }
.dot--idle { background: var(--bg); border: 1px solid var(--idle); }
.seg__kv { margin: 0; font-family: var(--font-mono); font-size: 11.5px; line-height: 1.5; white-space: nowrap; }
.seg__kv .k, pre .k { color: var(--accent); }
.seg__kv .p { color: var(--text-muted); }
.seg__note { margin: 4px 0 0; font-size: 12px; line-height: 1.5; color: var(--text-muted); }
.hero__copy { max-width: 560px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 28px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); }
.eyebrow__mark { width: 8px; height: 8px; background: var(--accent); flex-shrink: 0; }
.hero__title { margin: 0; font-size: var(--fs-h1); font-weight: var(--weight-regular); line-height: var(--lh-h1); letter-spacing: var(--ls-h1); }
.hero__line { display: block; }
.lede { margin: 32px 0 0; max-width: 520px; font-size: 17px; line-height: 1.7; color: var(--text-muted); }
.lede strong { color: var(--text); }
.chips { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 20px 0 0; padding: 0; list-style: none; }
.chips__label { margin-right: 4px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); }
.chip { padding: 6px 10px; font-family: var(--font-mono); font-size: 12px; line-height: 1.2; background: var(--bg-panel); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); max-width: 100%; overflow-wrap: anywhere; }
.platforms { margin-top: 36px; }
.platforms__label { margin: 0 0 10px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); }
.platforms__list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; padding: 0; list-style: none; border: 1px solid var(--border); }
.platforms__item + .platforms__item { border-left: 1px solid var(--border); }
.platforms__link { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 8px 4px; font-size: 14px; color: var(--text); text-decoration: none; }
.platforms__link svg { width: 17px; height: 17px; flex-shrink: 0; }
.platforms__link:hover { background: var(--bg-panel); color: var(--accent); }
.next { border-top: 1px solid var(--border); padding: 30px var(--gutter) 64px; text-align: center; }
.next__label { margin: 0; font-family: var(--font-mono); font-size: 13px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-muted); }
.site-footer { border-top: 1px solid var(--border); background: var(--bg); color: var(--text); padding-top: 64px; padding-bottom: 28px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.2fr .8fr; gap: 40px; }
.footer-brand p { max-width: 300px; margin: 20px 0; color: var(--text-muted); font-size: 14px; }
.footer-title { margin: 0 0 18px; font-size: 14px; font-weight: var(--weight-medium); }
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links a { display: inline-block; padding-block: 5px; color: var(--text-muted); text-decoration: none; font-size: 14px; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 13px; }
.footer-bottom p { margin: 0; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 24px; }
.footer-legal a { color: var(--text-muted); }
@keyframes draw-y { from { transform: scaleY(0); } to { transform: scaleY(1); } }
@keyframes draw-x { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes cursor-blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@media (max-width: 1240px) {
  .nav { display: none; }
  .header-tools { margin-left: auto; }
  .menu-toggle { display: inline-flex; }
}
@media (min-width: 1241px) {
  .mobile-drawer, .nav-veil { display: none !important; }
}
@media (max-width: 1240px) {
  .hero { grid-template-columns: minmax(0, 1fr); row-gap: 48px; padding: 56px var(--gutter) 40px; }
  .hero__copy { order: -1; max-width: 680px; }
  .hero__art { margin-left: calc(var(--gutter) * -1); }
}
@media (max-width: 860px) {
  .notice__key { display: none; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
  :root { --fs-h1: clamp(24px, 4vw, 30px); --gutter: 24px; --section-space: 64px; }
  .grid--two { grid-template-columns: minmax(0, 1fr); }
  .hero__art { height: 504px; }
  .device { transform: scale(.75); transform-origin: top left; }
  .hero__line { line-height: 1.25; }
}
@media (max-width: 640px) {
  :root { --gutter: 20px; --section-space: 56px; }
  .wrap { padding-inline: var(--gutter); }
  .header-inner { padding-inline: var(--gutter); gap: 8px; }
  .brand { font-size: 15px; gap: 8px; }
  .brand__mark { width: 26px; height: 26px; }
  .header-tools { margin-left: auto; gap: 6px; }
  .lang { padding-left: 12px; }
  .lang__full { display: none; }
  .lang__short { display: inline; }
  .notice { min-height: var(--notice-h); gap: 10px; padding-block: 8px; font-size: 11px; }
  .notice__link { padding-inline: 8px; font-size: 11px; }
  .notice__copy { min-width: 0; }
  .hero { padding-top: 40px; row-gap: 28px; }
  .hero__art { height: 302px; width: calc(100% + var(--gutter)); }
  .device { transform: scale(.45); transform-origin: top left; margin-left: -16px; }
  .hero__copy { max-width: 100%; }
  .eyebrow { font-size: 10px; letter-spacing: .03em; margin-bottom: 22px; }
  .cta { margin-top: 26px; gap: 10px; }
  .btn { padding-inline: 20px; font-size: 15px; }
  .lede { margin-top: 24px; font-size: 15px; }
  .chips { gap: 6px; }
  .chip { padding: 5px 8px; font-size: 11px; }
  .platforms { margin-top: 26px; }
  .platforms__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .platforms__item:nth-child(3) { border-left: 0; }
  .platforms__item:nth-child(n+3) { border-top: 1px solid var(--border); }
  .panel, .card { padding: 24px; }
  pre { padding: 18px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .footer-bottom { margin-top: 32px; }
  .tilt, [data-tilt] { transform: none !important; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
  html.reveal-ready .reveal { transition: none; }
  .wire--v, .wire--h, .cmd__cursor { animation: none; }
}