:root {
  --ink: #f7f3ff;
  --muted: #aaa0c5;
  --void: #07040f;
  --space: #0d071b;
  --panel: #130b27;
  --panel-2: #1a0e34;
  --line: rgba(205, 181, 255, 0.16);
  --violet: #8b5cf6;
  --lilac: #c4a7ff;
  --signal: #e7d8ff;
  --cyan: #72e6ff;
  --success: #79f2c0;
  --radius: 22px;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.45);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 7%, rgba(106, 52, 207, 0.18), transparent 28rem),
    radial-gradient(circle at 88% 24%, rgba(96, 61, 196, 0.12), transparent 25rem),
    var(--void);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.5) 0 1px, transparent 1.3px),
    radial-gradient(circle, rgba(179,139,255,.35) 0 1px, transparent 1.2px);
  background-position: 0 0, 36px 19px;
  background-size: 88px 88px, 134px 134px;
  opacity: .23;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button, input, select { font: inherit; }
button { color: inherit; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }

.container { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.section { padding: 112px 0; position: relative; }
.section-tight { padding: 76px 0; }
.section-label {
  margin: 0 0 15px;
  color: var(--lilac);
  font: 700 12px/1.2 Consolas, "Microsoft YaHei UI", monospace;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.section-title {
  max-width: 760px;
  margin: 0;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.1;
  letter-spacing: -.045em;
}
.section-desc { max-width: 660px; margin: 22px 0 0; color: var(--muted); font-size: 17px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 48px; }
.section-head .section-desc { max-width: 420px; margin: 0; }
.dim { color: var(--muted); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: 72px;
  background: rgba(7, 4, 15, .72);
  border-bottom: 1px solid rgba(199, 173, 255, .12);
  backdrop-filter: blur(18px);
}
.nav { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 26px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -.03em; }
.logo-mark {
  display: grid;
  place-items: center;
  width: 36px;
  aspect-ratio: 1;
  border-radius: 11px;
  background: linear-gradient(145deg, #ad87ff, #6230ce);
  box-shadow: 0 0 28px rgba(139, 92, 246, .45);
}
.logo-mark svg { width: 21px; height: 21px; }
.nav-links { display: flex; align-items: center; gap: 27px; margin-left: auto; }
.nav-links a { color: #c9c1d8; font-size: 14px; transition: color .2s ease; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: #fff; }
.nav-cta, .btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 126px;
  padding: 0 22px;
  border: 0;
  border-radius: 12px;
  background: var(--signal);
  color: #150a2e;
  font-weight: 800;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover, .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(174, 137, 255, .26); }
.btn-secondary { color: var(--ink); background: rgba(255,255,255,.06); border: 1px solid var(--line); }
.btn-secondary:hover { background: rgba(255,255,255,.1); }
.btn-sm { min-height: 40px; min-width: 104px; padding-inline: 16px; border-radius: 10px; font-size: 14px; }
.menu-toggle { display: none; border: 0; background: none; padding: 8px; cursor: pointer; }
.menu-toggle span { display: block; width: 24px; height: 2px; margin: 5px; background: #fff; }

.hero {
  min-height: 820px;
  padding: 150px 0 90px;
  display: flex;
  align-items: center;
  position: relative;
}
.hero::after {
  content: "";
  position: absolute;
  width: 820px;
  height: 310px;
  left: 44%;
  top: 30%;
  z-index: -1;
  border: 1px solid rgba(178, 132, 255, .2);
  border-radius: 50%;
  transform: rotate(-12deg);
  box-shadow: 0 0 70px rgba(127, 76, 231, .1), inset 0 0 70px rgba(127, 76, 231, .08);
}
.hero-grid { display: grid; grid-template-columns: .86fr 1.14fr; gap: 58px; align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 25px;
  color: var(--lilac);
  font: 700 12px/1.2 Consolas, monospace;
  letter-spacing: .14em;
}
.signal-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 16px var(--cyan); animation: pulse 2s infinite; }
h1 {
  margin: 0;
  font-size: clamp(50px, 7vw, 92px);
  line-height: .98;
  letter-spacing: -.065em;
}
.hero h1 span { display: block; color: var(--lilac); }
.hero-lead { max-width: 560px; margin: 28px 0 0; color: #b9afce; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-note { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 23px; color: #8f84a9; font-size: 12px; }
.hero-note span::before { content: "✦"; margin-right: 6px; color: var(--lilac); }
.hero-visual { align-self: center; position: relative; min-width: 0; }
.hero-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(204, 177, 255, .24);
  border-radius: 28px;
  background: #100924;
  box-shadow: var(--shadow), 0 0 100px rgba(107, 61, 210, .2);
}
.hero-frame img { display: block; width: 100%; height: auto; object-fit: contain; object-position: center; }
.orbit-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 14px;
  border: 1px solid rgba(218, 199, 255, .24);
  border-radius: 999px;
  color: #ede5ff;
  background: rgba(16, 9, 36, .78);
  box-shadow: 0 12px 36px rgba(0,0,0,.36);
  backdrop-filter: blur(12px);
  font-size: 12px;
}
.orbit-chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 12px var(--success); }
.chip-one { left: -24px; top: 14%; }
.chip-two { right: -16px; bottom: 12%; }

.mission-strip { border-block: 1px solid var(--line); background: rgba(255,255,255,.018); }
.mission-grid { min-height: 112px; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); align-items: center; }
.mission-item { padding: 0 34px; border-left: 1px solid var(--line); }
.mission-item:first-child { padding-left: 0; border-left: 0; }
.mission-kicker { color: var(--muted); font-size: 12px; }
.mission-value { margin-top: 6px; font-size: 19px; font-weight: 700; }

.feature-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }
.feature-card {
  grid-column: span 4;
  min-height: 280px;
  padding: 30px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
  transition: transform .25s ease, border-color .25s ease;
}
.feature-card:hover { transform: translateY(-6px); border-color: rgba(200, 171, 255, .42); }
.feature-card:nth-child(2), .feature-card:nth-child(5) { transform: translateY(24px); }
.feature-card:nth-child(2):hover, .feature-card:nth-child(5):hover { transform: translateY(18px); }
.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: rgba(152, 103, 255, .14);
  border: 1px solid rgba(181, 144, 255, .19);
  color: var(--lilac);
  font: 700 15px Consolas, monospace;
}
.feature-card h3 { margin: 54px 0 8px; font-size: 22px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; }
.card-orbit {
  position: absolute;
  width: 160px;
  height: 56px;
  right: -40px;
  top: 32px;
  border: 1px solid rgba(168, 123, 255, .16);
  border-radius: 50%;
  transform: rotate(-20deg);
}

.showcase { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 72px; }
.showcase-media { position: relative; align-self: center; }
.showcase-media::before {
  content: "";
  position: absolute;
  inset: 15% -7%;
  z-index: -1;
  background: rgba(117, 65, 218, .19);
  filter: blur(70px);
}
.showcase-media img { display: block; width: 100%; height: auto; object-fit: contain; object-position: center; border: 1px solid var(--line); border-radius: 24px; }
.check-list { display: grid; gap: 15px; padding: 0; margin: 28px 0 0; list-style: none; }
.check-list li { display: flex; gap: 12px; color: #c8c0d8; }
.check-list li::before { content: "↗"; color: var(--cyan); font-weight: 700; }

.download-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.download-card {
  min-width: 0;
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
}
.platform-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 13px; background: #251446; color: var(--lilac); font-weight: 800; }
.download-card h3 { margin: 24px 0 3px; }
.download-card p { min-height: 48px; margin: 0 0 20px; color: var(--muted); font-size: 13px; }
.download-card .btn { width: 100%; min-width: 0; }

.scene-grid { display: grid; grid-template-columns: 1.35fr .82fr .82fr; gap: 16px; }
.scene-card { min-height: 410px; padding: 30px; display: flex; flex-direction: column; justify-content: end; position: relative; overflow: hidden; border-radius: 24px; border: 1px solid var(--line); background: var(--panel); }
.scene-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .5; }
.scene-card::after { content: ""; position: absolute; inset: 28% 0 0; background: linear-gradient(transparent, #0c061a 86%); }
.scene-card > div { position: relative; z-index: 1; }
.scene-card h3 { margin: 0 0 5px; font-size: 25px; }
.scene-card p { margin: 0; color: #aaa0c5; font-size: 14px; }
.scene-card:not(:first-child) { min-height: 410px; }
.scene-card:not(:first-child) .scene-symbol { position: absolute; inset: 30px 30px auto auto; color: var(--lilac); font: 700 40px Consolas, monospace; opacity: .55; }

.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.quote-card { padding: 30px; border-top: 1px solid rgba(203, 175, 255, .35); background: rgba(255,255,255,.022); }
.stars { color: var(--lilac); letter-spacing: .12em; }
.quote-card blockquote { min-height: 110px; margin: 19px 0 28px; color: #ddd6eb; }
.person { display: flex; align-items: center; gap: 12px; }
.avatar { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: linear-gradient(140deg, #9d72ff, #39206e); font-weight: 800; }
.person strong { display: block; font-size: 14px; }
.person span { display: block; color: var(--muted); font-size: 12px; }

.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); align-items: center; gap: 16px; }
.price-card { padding: 34px; border: 1px solid var(--line); border-radius: 22px; background: var(--panel); }
.price-card.featured { min-height: 500px; padding-top: 48px; background: linear-gradient(160deg, #2a1555, #130a29); border-color: rgba(206, 179, 255, .4); box-shadow: 0 30px 70px rgba(89, 48, 172, .24); }
.price-tag { display: inline-flex; padding: 5px 10px; border-radius: 99px; color: #1b0b36; background: var(--lilac); font-size: 11px; font-weight: 800; }
.price-card h3 { margin: 24px 0 0; font-size: 25px; }
.price { margin: 12px 0 22px; font-size: 44px; font-weight: 800; letter-spacing: -.05em; }
.price small { color: var(--muted); font-size: 13px; letter-spacing: 0; }
.price-card ul { min-height: 150px; padding: 0; margin: 0 0 25px; list-style: none; color: #bdb4cf; font-size: 14px; }
.price-card li { margin: 9px 0; }
.price-card li::before { content: "·"; margin-right: 9px; color: var(--cyan); }
.price-card .btn { width: 100%; }

.faq-wrap { display: grid; grid-template-columns: .74fr 1.26fr; gap: 80px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; padding: 23px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 0; background: none; text-align: left; font-weight: 700; cursor: pointer; }
.faq-question span:last-child { color: var(--lilac); font-size: 23px; transition: transform .2s ease; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-answer p { margin: 0; padding: 0 42px 22px 0; color: var(--muted); font-size: 14px; }
.faq-item.open .faq-answer { max-height: 190px; }
.faq-item.open .faq-question span:last-child { transform: rotate(45deg); }

.cta-band {
  overflow: hidden;
  padding: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 38px;
  position: relative;
  border: 1px solid rgba(207, 182, 255, .25);
  border-radius: 28px;
  background: linear-gradient(125deg, #251049, #130a29 65%);
}
.cta-band::after { content: ""; position: absolute; width: 430px; height: 130px; right: -80px; border: 1px solid rgba(205,180,255,.2); border-radius: 50%; transform: rotate(-10deg); }
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.1; }

.page-hero { padding: 160px 0 78px; border-bottom: 1px solid var(--line); }
.page-hero-grid { display: grid; grid-template-columns: 1fr .78fr; align-items: center; gap: 70px; }
.page-hero h1 { font-size: clamp(48px, 7vw, 80px); }
.page-hero p { max-width: 650px; color: var(--muted); font-size: 18px; }
.page-visual img { display: block; width: 100%; height: auto; object-fit: contain; object-position: center; border-radius: 24px; border: 1px solid var(--line); }

.download-rows { display: grid; gap: 14px; }
.download-row { display: grid; grid-template-columns: 72px 1fr auto; align-items: center; gap: 24px; padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.025); }
.download-row .platform-icon { width: 56px; height: 56px; }
.download-row h2 { margin: 0; font-size: 20px; }
.download-row p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.spec { padding: 26px; border-left: 1px solid rgba(198, 170, 255, .35); background: rgba(255,255,255,.02); }
.spec h3 { margin: 0 0 9px; font-size: 17px; }
.spec p { margin: 0; color: var(--muted); font-size: 13px; }

.help-layout { display: grid; grid-template-columns: 250px 1fr; gap: 54px; align-items: start; }
.help-nav { position: sticky; top: 98px; padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.help-nav a { display: block; padding: 11px 12px; border-radius: 9px; color: var(--muted); font-size: 14px; }
.help-nav a:hover { color: white; background: rgba(255,255,255,.05); }
.help-search { display: flex; max-width: 760px; margin-top: 30px; padding: 7px; border: 1px solid rgba(209, 183, 255, .25); border-radius: 15px; background: rgba(255,255,255,.04); }
.help-search input { flex: 1; min-width: 0; padding: 0 16px; border: 0; outline: 0; color: white; background: transparent; }
.help-search input::placeholder { color: #817593; }
.help-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
.help-card { min-height: 200px; padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.025); }
.help-card h2 { margin: 28px 0 7px; font-size: 20px; }
.help-card p { margin: 0; color: var(--muted); font-size: 14px; }
.article-list { margin-top: 65px; }
.article { display: grid; grid-template-columns: 42px 1fr auto; gap: 20px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--line); }
.article-num { color: var(--lilac); font: 700 12px Consolas, monospace; }
.article h3 { margin: 0; font-size: 17px; }
.article p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.article > span:last-child { color: var(--lilac); }

.site-footer { padding: 76px 0 28px; border-top: 1px solid var(--line); background: #05020c; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(4, 1fr); gap: 40px; }
.footer-brand p { max-width: 290px; color: var(--muted); font-size: 13px; }
.footer-col h3 { margin: 0 0 15px; color: #e5deef; font-size: 13px; }
.footer-col a { display: block; margin: 8px 0; color: #8f84a2; font-size: 12px; }
.footer-col a:hover { color: var(--lilac); }
.footer-bottom { margin-top: 56px; padding-top: 22px; display: flex; justify-content: space-between; gap: 30px; border-top: 1px solid rgba(255,255,255,.07); color: #70677e; font-size: 11px; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

@keyframes pulse { 0%,100% { opacity: .45; transform: scale(.75); } 50% { opacity: 1; transform: scale(1.2); } }

@media (max-width: 980px) {
  .menu-toggle { display: block; }
  .nav-links {
    position: fixed; inset: 72px 20px auto;
    display: none; flex-direction: column; align-items: stretch; gap: 0;
    padding: 12px; border: 1px solid var(--line); border-radius: 16px;
    background: rgba(12, 6, 27, .98); box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px; }
  .nav > .nav-cta { display: none; }
  .hero { min-height: auto; }
  .hero-grid, .page-hero-grid, .showcase, .faq-wrap { grid-template-columns: 1fr; }
  .hero-copy { max-width: 720px; }
  .hero-visual { width: min(760px, 100%); }
  .feature-card { grid-column: span 6; }
  .feature-card:nth-child(2), .feature-card:nth-child(5) { transform: none; }
  .download-grid { grid-template-columns: repeat(2, 1fr); }
  .scene-grid { grid-template-columns: 1fr 1fr; }
  .scene-card:first-child { grid-column: 1 / -1; }
  .mission-grid { grid-template-columns: repeat(3, 1fr); }
  .mission-item:first-child { grid-column: 1 / -1; padding: 24px 0; }
  .help-layout { grid-template-columns: 1fr; }
  .help-nav { position: static; display: flex; flex-wrap: wrap; }
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .container { width: min(100% - 28px, var(--max)); }
  .section { padding: 78px 0; }
  .section-head { display: block; }
  .section-head .section-desc { margin-top: 18px; }
  .hero { padding-top: 126px; }
  .hero-grid { gap: 44px; }
  h1 { font-size: 49px; }
  .orbit-chip { display: none; }
  .feature-grid, .quote-grid, .pricing-grid, .help-grid { grid-template-columns: 1fr; }
  .feature-card { grid-column: 1; min-height: 250px; }
  .download-grid, .scene-grid, .specs { grid-template-columns: 1fr; }
  .scene-card:first-child { grid-column: auto; }
  .mission-grid { grid-template-columns: 1fr; padding: 18px 0; }
  .mission-item, .mission-item:first-child { grid-column: auto; padding: 16px 0; border-left: 0; border-top: 1px solid var(--line); }
  .mission-item:first-child { border-top: 0; }
  .price-card.featured { min-height: auto; }
  .cta-band { padding: 38px 25px; display: block; }
  .cta-band .btn { margin-top: 24px; }
  .download-row { grid-template-columns: 55px 1fr; }
  .download-row .btn { grid-column: 1 / -1; width: 100%; }
  .article { grid-template-columns: 32px 1fr; }
  .article > span:last-child { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-top: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Hero media safeguards */
.hero-grid { align-items: center; }
.hero-visual, .showcase-media, .page-visual { align-self: center; height: auto; padding: 0; margin-top: 0; margin-bottom: 0; overflow: visible; transform: none; }
.hero-frame { padding: 0; margin: 0; transform: none; clip-path: none; }
.hero-frame img, .showcase-media img, .page-visual img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 0;
  max-height: none;
  margin: 0;
  padding: 0;
  object-fit: contain;
  object-position: center;
  clip-path: none;
  transform: none;
}