:root {
  --bg: #f0f7fe;
  --panel: #ffffff;
  --panel-2: #e5f0fb;
  --panel-mid: #edf5fd;
  --panel-glow: rgba(248, 226, 244, 0.85);
  --border: #d6e3f0;
  --accent: #1688e0;
  --accent-dark: #0b5fa8;
  --accent-halo: rgba(22, 136, 224, 0.16);
  --text: #0e141b;
  --text-muted: #5d6b7a;
  --text-dim: #8c97a3;
  --success: #1f9e6b;
  --warn: #d98a12;
  --error: #d64545;
  --white: #ffffff;
  --mask: #000000;
  --clear: transparent;
  --violet: #c457c0;
  --violet-2: #8f7cf2;
  --coral: #f2683c;
  --coral-2: #f7a27f;
  --coral-deep: #cf4f27;
  --coral-hi: #fdd3bf;
  --sky: #9fd2f7;
  --disc-hi: #d9eefd;
  --beam-top-a: #df98db;
  --beam-top-b: #b6aaf8;
  --beam-cap: #7b66e3;
  --glass-a: rgba(248, 252, 255, 0.80);
  --glass-b: rgba(190, 228, 246, 0.46);
  --glass-edge: rgba(255, 255, 255, 0.95);
  --glass-rim: rgba(118, 184, 226, 0.62);
  --glass-rim-fill: rgba(176, 216, 240, 0.40);
  --fact-blue: #d3e9fb;
  --fact-pink: #f8e2f4;
  --fact-coral: #fde4d8;
  --chip-line: rgba(14, 20, 27, 0.14);
  --chip-fill: rgba(255, 255, 255, 0.5);
  --ink-soft: #1f2a36;
  --btn-quiet: #e2e9f0;
  --btn-quiet-hover: #d7e0e9;
  --hover: #eef4fa;
  --grid-line: rgba(22, 136, 224, 0.075);
  --veil: rgba(14, 20, 27, 0.24);
  --radius-card: 8px;
  --radius-btn: 6px;
  --radius-chip: 4px;
  --radius-pill: 999px;
  --radius-round: 50%;
  --shadow-bar: 0 1px 2px rgba(14, 20, 27, 0.04), 0 14px 34px -14px rgba(22, 72, 128, 0.16);
  --shadow-float: 0 12px 32px -18px rgba(22, 72, 128, 0.22);
  --font-display: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, Consolas, monospace;
  --fs-h1: clamp(34px, 3.4vw, 48px);
  --fs-h2: clamp(26px, 2.6vw, 36px);
  --fs-h3: 22px;
  --fs-body: 16px;
  --fs-small: 14px;
  --fs-micro: 12px;
  --weight-normal: 400;
  --weight-medium: 600;
  --weight-bold: 700;
  --gutter: 24px;
  --wrap-width: 1180px;
  --reading-width: 800px;
  --header-width: 1280px;
  --section-space: 140px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 0.2s;
  --reveal-duration: 0.65s;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html.nav-open { overflow: hidden; }
body {
  margin: 0;
  background: var(--panel);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
[hidden] { display: none !important; }
img, svg { max-width: 100%; }
img { height: auto; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
.prose a, .text-link { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 0.22em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
::selection { background: var(--fact-blue); color: var(--text); }
h1, h2, h3 { font-family: var(--font-display); font-weight: var(--weight-bold); line-height: 1.2; text-wrap: balance; }
h1 { font-size: var(--fs-h1); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); letter-spacing: -0.01em; }
h3 { font-size: var(--fs-h3); }
p { margin-top: 0; }
.word { white-space: nowrap; }
.muted { color: var(--text-muted); }
.mono, code, pre { font-family: var(--font-mono); }
code { overflow-wrap: anywhere; font-size: 0.9em; }
pre {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--panel-mid);
  color: var(--text);
  font-size: var(--fs-small);
  line-height: 1.8;
}
pre code { white-space: pre; overflow-wrap: normal; font-size: inherit; }
:where(section, article, aside, nav, div, li) { min-width: 0; }
:where([id]) { scroll-margin-top: 28px; }
.wrap {
  width: 100%;
  max-width: calc(var(--wrap-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.reading { max-width: calc(var(--reading-width) + var(--gutter) * 2); }
.section { padding-top: var(--section-space); padding-bottom: var(--section-space); }
.section--flow { background: var(--panel-2); color: var(--text); }
.section-heading { max-width: 760px; margin-bottom: var(--space-5); }
.section-heading h2 { margin-top: 0; margin-bottom: var(--space-2); }
.section-heading p { color: var(--text-muted); }
.grid-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); }
.stack > * + * { margin-top: var(--space-3); }
.prose { min-width: 0; overflow-wrap: break-word; }
.prose h2 { margin-top: 2.4em; }
.prose h3 { margin-top: 1.8em; }
.prose p, .prose li { line-height: 1.85; }
.prose li + li { margin-top: var(--space-1); }
.prose > :first-child { margin-top: 0; }
.panel, .card {
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--panel);
  color: var(--text);
}
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 12px 24px;
  border: 1px solid var(--clear);
  border-radius: var(--radius-btn);
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: var(--weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.5;
  transition: transform var(--duration) var(--ease);
}
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.btn:hover { transform: translateY(-1px); }
.btn--ink { background: var(--text); color: var(--panel); }
.btn--ink:hover, .btn--ink.is-hover { background: var(--ink-soft); color: var(--panel); }
.btn--quiet { background: var(--btn-quiet); color: var(--text); }
.btn--quiet:hover, .btn--quiet.is-hover { background: var(--btn-quiet-hover); color: var(--text); }
.btn--outline { background: var(--panel); border-color: var(--border); color: var(--accent-dark); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn.is-focus { outline: 2px solid var(--accent); outline-offset: 3px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.top-zone { background: linear-gradient(180deg, var(--bg) 0%, var(--bg) 58%, var(--panel) 100%); color: var(--text); overflow-x: clip; }
.masthead { position: relative; z-index: 50; padding: 16px var(--gutter) 0; }
.masthead__bar {
  position: relative;
  width: 100%;
  max-width: min(100%, calc(var(--header-width) + var(--gutter) * 2));
  min-height: 64px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 12px 10px 18px;
  background: var(--panel);
  color: var(--text);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-bar);
}
.brand { flex-shrink: 0; display: inline-flex; align-items: center; gap: 12px; }
.brand__mark { display: block; flex-shrink: 0; width: 34px; height: 34px; border-radius: var(--radius-card); }
.brand__placeholder { background: var(--panel-mid); color: var(--text); border: 1px solid var(--border); }
.brand__name { font-family: var(--font-display); font-size: 16px; font-weight: var(--weight-bold); letter-spacing: -0.01em; white-space: nowrap; }
.brand__tag { padding-left: 12px; border-left: 1px solid var(--border); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; color: var(--text-muted); white-space: nowrap; }
.site-nav { min-width: 0; margin-inline: auto; }
.navlist { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 2px; }
.navlist a { display: flex; align-items: center; min-height: 36px; padding: 6px 12px; border-radius: var(--radius-pill); font-size: 14.5px; color: var(--text-muted); white-space: nowrap; }
.navlist a:hover { background: var(--hover); color: var(--text); }
.navlist a[aria-current="page"] { background: var(--fact-blue); color: var(--accent-dark); font-weight: var(--weight-medium); }
.header-tools { position: relative; display: flex; align-items: center; gap: 8px; flex-shrink: 0; margin-left: auto; }
.lang { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 38px; padding: 8px 14px; border: 1px solid var(--border); border-radius: var(--radius-btn); background: var(--panel); color: var(--text); font-size: 14px; white-space: nowrap; }
.lang svg { width: 16px; height: 16px; color: var(--text-muted); flex-shrink: 0; }
.lang__caret { font-size: 12px; color: var(--text-muted); }
.lang__short { display: none; }
.language-menu { position: absolute; top: calc(100% + 10px); right: 0; width: 190px; padding: 8px; border: 1px solid var(--border); border-radius: var(--radius-card); background: var(--panel); color: var(--text); box-shadow: var(--shadow-bar); z-index: 4; }
.language-menu a { display: flex; align-items: center; width: 100%; min-height: 44px; padding: 10px 12px; border-radius: var(--radius-btn); }
.language-menu a:hover, .language-menu a[aria-current] { background: var(--fact-blue); color: var(--accent-dark); }
.menu-toggle { display: none; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; border: 1px solid var(--border); border-radius: var(--radius-btn); background: var(--panel); color: var(--text); }
.menu-toggle svg { width: 20px; height: 20px; }
.mobile-drawer { display: none; }
.menu-veil { position: fixed; inset: 0; z-index: -1; background: var(--veil); color: var(--text); border: 0; }
.skip-link { position: fixed; left: var(--gutter); top: 8px; z-index: 100; transform: translateY(-150%); padding: 12px 20px; border-radius: var(--radius-btn); background: var(--text); color: var(--panel); }
.skip-link:focus { transform: none; }
.hero { display: grid; grid-template-columns: minmax(0, 45fr) minmax(0, 55fr); height: max(660px, calc(100vh - 152px)); padding: 16px var(--gutter) 0; overflow-x: clip; }
.hero__copy { align-self: center; padding: 0 40px 24px 48px; }
.badge { display: inline-flex; align-items: center; gap: 10px; max-width: 100%; padding: 6px 14px 6px 11px; border: 1px solid var(--border); border-radius: var(--radius-pill); background: var(--panel); color: var(--text-muted); font-size: 13px; }
.badge__dot { width: 8px; height: 8px; flex-shrink: 0; border-radius: var(--radius-round); background: var(--accent); color: var(--text); box-shadow: 0 0 0 4px var(--accent-halo); }
.badge b { color: var(--text); font-weight: var(--weight-medium); }
.hero__title { margin: 26px 0 0; font-size: var(--fs-h1); line-height: 1.14; letter-spacing: -0.02em; }
.hero__title > span { display: block; white-space: nowrap; }
.hero__title-dim { color: var(--text-dim); }
.hero__lead { margin: 28px 0 0; max-width: 520px; font-size: 15.5px; line-height: 1.75; color: var(--text-muted); }
.hero__lead strong { color: var(--text); font-weight: var(--weight-medium); }
.devices { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; max-width: 540px; margin: 28px 0 0; padding: 20px 0 0; border-top: 1px solid var(--border); list-style: none; }
.devices li, .devices a { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--text); }
.devices svg { width: 18px; height: 18px; color: var(--text-muted); flex-shrink: 0; }
.devices a { min-height: 32px; }
.devices a:hover { color: var(--accent-dark); }
.devices .devices__sep { width: 1px; height: 16px; background: var(--border); color: var(--text); }
.cap { display: inline-flex; align-items: center; gap: 6px; max-width: 100%; padding: 5px 10px; border: 1px solid var(--border); border-radius: var(--radius-pill); background: var(--panel); color: var(--text-muted); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; overflow-wrap: anywhere; }
.devices .cap { font-size: 11px; }
.cap--store, .devices .cap--store { background: var(--fact-blue); border-color: var(--fact-blue); color: var(--accent-dark); }
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 24px var(--gutter) 140px; }
.fact { min-height: 250px; padding: 22px 28px 28px; border-radius: var(--radius-card); display: flex; flex-direction: column; justify-content: space-between; gap: 48px; color: var(--text); }
.fact--a { background: var(--fact-blue); color: var(--text); }
.fact--b { background: var(--fact-pink); color: var(--text); }
.fact--c { background: var(--fact-coral); color: var(--text); }
.fact__chip { align-self: flex-start; display: inline-flex; align-items: center; gap: 8px; padding: 5px 10px; border: 1px solid var(--chip-line); border-radius: var(--radius-chip); background: var(--chip-fill); color: var(--text); font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; }
.fact__title { margin: 0 0 10px; font-size: 30px; line-height: 1.2; }
.fact__text { margin: 0; max-width: 400px; font-size: 15px; line-height: 1.7; color: var(--text-muted); }
.site-footer { padding-top: 64px; padding-bottom: 32px; border-top: 1px solid var(--border); background: var(--panel-mid); color: var(--text); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 0.8fr 1.2fr 0.7fr; gap: var(--space-4); }
.footer-brand p { margin-top: 20px; max-width: 340px; font-size: var(--fs-small); color: var(--text-muted); }
.footer-title { margin: 0 0 16px; font-size: var(--fs-small); font-weight: var(--weight-bold); }
.footer-links { margin: 0; padding: 0; list-style: none; }
.footer-links a { display: block; padding-top: 7px; padding-bottom: 7px; font-size: var(--fs-small); color: var(--text-muted); overflow-wrap: anywhere; }
.footer-links a:hover { color: var(--accent-dark); }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: 12px 24px; font-size: var(--fs-micro); color: var(--text-muted); }
.footer-bottom p { margin: 0; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 20px; margin-left: auto; }
.reveal { opacity: 1; transform: none; }
html.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(18px); }
html.reveal-ready .reveal { transition: opacity var(--reveal-duration) var(--ease), transform var(--reveal-duration) var(--ease); }
@media (max-width: 1400px) {
  .brand__tag { display: none; }
  .navlist a { padding-inline: 11px; font-size: 14px; }
}
@media (max-width: 1024px) {
  .site-nav { display: none; }
  .header-tools { margin-left: auto; }
  .menu-toggle { display: inline-flex; }
  .masthead__bar { flex-wrap: wrap; }
  .mobile-drawer:not([hidden]) { display: block; flex-basis: 100%; width: 100%; max-height: calc(100dvh - 110px); overflow-y: auto; overscroll-behavior: contain; padding: 12px; border-top: 1px solid var(--border); background: var(--panel); color: var(--text); }
  .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; border-radius: var(--radius-btn); color: var(--text-muted); }
  .mobile-drawer a:hover, .mobile-drawer a[aria-current] { background: var(--fact-blue); color: var(--accent-dark); }
  .mobile-drawer__languages { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
}
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; height: auto; gap: 24px; }
  .hero__copy { padding: 48px 8px 8px; }
  .stage { aspect-ratio: 760 / 700; min-height: 400px; }
  .facts { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
  :root { --fs-h1: clamp(24px, 4.8vw, 30px); }
  .hero__title > span { white-space: normal; }
  .grid-two { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .masthead { padding-top: 12px; }
  .masthead__bar { padding: 8px; gap: 8px; }
  .brand { gap: 8px; }
  .brand__name { font-size: 14px; }
  .brand__mark { width: 30px; height: 30px; }
  .lang { min-height: 44px; padding-inline: 10px; }
  .lang__full { display: none; }
  .lang__short { display: inline; }
  .header-tools { margin-left: auto; gap: 6px; }
  .hero__copy { padding-top: 28px; padding-inline: 0; }
  .hero__title { margin-top: 20px; }
  .hero .cta { margin-top: 24px; gap: 8px; }
  .hero .btn { padding-inline: 16px; font-size: 12px; }
  .hero__lead { font-size: 14px; }
  .devices { gap: 8px 12px; }
  .badge { font-size: 11px; }
  .stage { min-height: 0; }
  .facts { padding-bottom: var(--section-space); }
  .fact { padding: 24px; min-height: 220px; gap: 32px; }
  .fact__title { font-size: 26px; }
  .panel, .card { padding: 24px; }
  .tilt, [data-tilt] { transform: none !important; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-legal { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, html.reveal-ready .reveal { transition: none; }
  html.reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
}