:root {
  --ink: #f4f5f8;
  --muted: #9ca5b8;
  --deep: #070a10;
  --panel: #10151f;
  --panel-soft: #151b27;
  --line: rgba(255, 255, 255, .1);
  --violet: #9b8cff;
  --cyan: #61d8e8;
  --amber: #ffc56d;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--deep);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }

.navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease;
}
.navbar.scrolled { background: rgba(7, 10, 16, .88); border-color: var(--line); backdrop-filter: blur(18px); }
.nav-container { min-height: 76px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: inline-flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 750; letter-spacing: .01em; }
.brand-mark { width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center; gap: 4px; border: 1px solid rgba(155, 140, 255, .45); border-radius: 10px; background: rgba(155, 140, 255, .1); }
.brand-mark i { width: 6px; height: 9px; display: block; border-radius: 50%; background: var(--violet); box-shadow: 0 0 14px rgba(155, 140, 255, .75); }
.nav-links { display: flex; align-items: center; gap: 30px; padding: 0; margin: 0; list-style: none; }
.nav-links a { color: var(--muted); font-size: 14px; transition: color .2s ease; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--ink); }
.nav-toggle { display: none; width: 40px; height: 40px; border: 0; background: transparent; padding: 8px; flex-direction: column; justify-content: center; gap: 5px; cursor: pointer; }
.nav-toggle span { width: 22px; height: 2px; display: block; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }

.hero { position: relative; overflow: hidden; padding: 150px 0 96px; }
.hero::before { content: ""; position: absolute; width: 680px; height: 680px; left: -240px; top: -300px; border-radius: 50%; background: rgba(94, 71, 200, .28); filter: blur(110px); pointer-events: none; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 72px; }
.eyebrow { margin: 0 0 18px; color: var(--violet); font-size: 13px; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { display: inline-block; width: 20px; height: 1px; margin-right: 9px; vertical-align: middle; background: currentColor; }
.hero h1 { margin: 0; font-size: clamp(46px, 6.2vw, 84px); line-height: 1.08; letter-spacing: -.055em; }
.hero h1 em { color: transparent; font-style: normal; background: linear-gradient(100deg, #b0a5ff, #66d7e8); background-clip: text; -webkit-background-clip: text; }
.hero-lead { max-width: 620px; margin: 30px 0 0; color: #b6becd; font-size: 18px; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; }
.button { min-height: 46px; padding: 11px 22px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; font-weight: 700; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: #0a0d14; border-color: transparent; background: linear-gradient(100deg, #a99dff, #68d7e7); }
.button.secondary { background: rgba(255, 255, 255, .04); }
.release-note { margin: 18px 0 0; color: #727c90; font-size: 12px; }

.vision-card { min-height: 480px; padding: 24px; border: 1px solid var(--line); border-radius: 26px; background: linear-gradient(160deg, rgba(155, 140, 255, .12), transparent 45%), var(--panel); box-shadow: 0 38px 100px rgba(0, 0, 0, .35); }
.vision-topline, .signal-row { display: flex; justify-content: space-between; align-items: center; color: #7f899d; font-size: 11px; letter-spacing: .12em; }
.live-dot { padding: 5px 10px; color: #a9e4c8; border: 1px solid rgba(92, 204, 150, .25); border-radius: 999px; letter-spacing: .06em; }
.focus-frame { position: relative; height: 330px; display: grid; place-items: center; }
.corner { position: absolute; width: 42px; height: 42px; border-color: rgba(155, 140, 255, .7); border-style: solid; }
.top-left { top: 58px; left: 38px; border-width: 1px 0 0 1px; }
.top-right { top: 58px; right: 38px; border-width: 1px 1px 0 0; }
.bottom-left { bottom: 48px; left: 38px; border-width: 0 0 1px 1px; }
.bottom-right { right: 38px; bottom: 48px; border-width: 0 1px 1px 0; }
.focus-core { text-align: center; }
.eyes { display: flex; justify-content: center; gap: 12px; margin-bottom: 20px; }
.eyes i { width: 17px; height: 24px; display: block; border-radius: 50%; background: linear-gradient(#a99dff, #63d8e8); box-shadow: 0 0 34px rgba(102, 216, 232, .45); }
.focus-core strong { display: block; font-size: 24px; }
.focus-core small { display: block; margin-top: 8px; color: #7f899d; letter-spacing: .1em; }
.signal-row span { padding-left: 13px; position: relative; letter-spacing: 0; }
.signal-row span::before { content: ""; position: absolute; left: 0; top: .68em; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); }

.section { padding: 112px 0; border-top: 1px solid var(--line); }
.section-heading { max-width: 780px; margin-bottom: 50px; }
.section-heading h2, .about-grid h2 { margin: 0; font-size: clamp(32px, 4vw, 52px); line-height: 1.2; letter-spacing: -.035em; }
.section-heading > p:last-child { margin: 20px 0 0; color: var(--muted); }
.feature-grid, .scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card, .scene-card { min-height: 260px; padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.feature-index { color: var(--violet); font-size: 12px; font-weight: 750; letter-spacing: .1em; }
.feature-card h3, .scene-card h3 { margin: 54px 0 12px; font-size: 21px; }
.feature-card p, .scene-card p { margin: 0; color: var(--muted); font-size: 14px; }
.scene-section { background: #090d14; }
.split-heading { max-width: none; display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 48px; }
.split-heading > p:last-child { max-width: 430px; justify-self: end; }
.scene-card { position: relative; overflow: hidden; min-height: 310px; background: var(--panel-soft); }
.scene-card::after { content: ""; position: absolute; width: 190px; height: 190px; right: -80px; bottom: -90px; border-radius: 50%; filter: blur(40px); opacity: .22; }
.scene-card > span { color: #7f899d; font-size: 11px; letter-spacing: .14em; }
.scene-card h3 { margin-top: 90px; font-size: 26px; }
.accent-violet::after { background: var(--violet); }
.accent-cyan::after { background: var(--cyan); }
.accent-amber::after { background: var(--amber); }

.about-section { background: linear-gradient(135deg, rgba(155, 140, 255, .09), transparent 55%); }
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; }
.about-copy > p { margin: 0 0 32px; color: #bdc4d1; font-size: 17px; }
.about-copy dl { margin: 0; border-top: 1px solid var(--line); }
.about-copy dl div { padding: 18px 0; display: grid; grid-template-columns: 150px 1fr; gap: 20px; border-bottom: 1px solid var(--line); }
.about-copy dt { color: #788296; font-size: 13px; }
.about-copy dd { margin: 0; font-size: 14px; }

.footer { padding: 48px 0 26px; border-top: 1px solid var(--line); }
.footer-grid { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; }
.footer-grid p { margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 24px; }
.footer-links a { color: var(--muted); font-size: 13px; }
.footer-links a:hover { color: var(--ink); }
.footer-bottom { margin-top: 36px; padding-top: 22px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: #687286; font-size: 12px; }

.legal-main { min-height: calc(100vh - 210px); padding: 128px 0 88px; }
.legal-header { max-width: 800px; margin-bottom: 36px; }
.legal-header h1 { margin: 0 0 14px; font-size: clamp(36px, 5vw, 58px); letter-spacing: -.045em; }
.legal-meta { color: var(--muted); font-size: 13px; }
.legal-card { max-width: 900px; padding: 40px 46px; border: 1px solid var(--line); border-radius: 20px; background: var(--panel); }
.legal-card h2 { margin: 38px 0 12px; font-size: 21px; }
.legal-card h2:first-child { margin-top: 0; }
.legal-card h3 { margin: 24px 0 10px; font-size: 16px; }
.legal-card p, .legal-card li { color: #aeb6c5; font-size: 14px; }
.legal-card ul { padding-left: 20px; }
.legal-card a { color: var(--cyan); }

@media (max-width: 850px) {
  .nav-links { display: none; position: fixed; inset: 0; z-index: 25; padding: 100px 28px 30px; flex-direction: column; align-items: flex-start; background: rgba(7, 10, 16, .98); }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 22px; }
  .nav-toggle { z-index: 30; display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { padding-top: 122px; }
  .hero-grid, .about-grid { grid-template-columns: 1fr; gap: 56px; }
  .vision-card { min-height: 420px; }
  .feature-grid, .scene-grid { grid-template-columns: 1fr; }
  .feature-card, .scene-card { min-height: 220px; }
  .scene-card h3 { margin-top: 58px; }
  .split-heading { grid-template-columns: 1fr; gap: 0; }
  .split-heading > p:last-child { justify-self: start; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .hero { padding-bottom: 72px; }
  .hero-lead { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .vision-card { min-height: 370px; padding: 18px; }
  .focus-frame { height: 270px; }
  .signal-row { gap: 8px; font-size: 9px; }
  .section { padding: 80px 0; }
  .about-copy dl div { grid-template-columns: 1fr; gap: 4px; }
  .footer-grid, .footer-bottom { flex-direction: column; }
  .legal-card { padding: 28px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}