:root {
  --bg: #070b14;
  --bg-2: #0c1220;
  --bg-3: #10182a;
  --line: rgba(150, 190, 255, 0.12);
  --text: #e8eef8;
  --muted: #8b9bb4;
  --accent: #5eead4;
  --accent-2: #8b7cff;
  --glow: rgba(94, 234, 212, 0.35);
  --max: 1180px;
  --sans: "HarmonyOS Sans SC", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: #fff; }
h1, h2, h3 {
  letter-spacing: 0.01em;
  line-height: 1.25;
  color: #f4f7ff;
  font-weight: 650;
  margin: 0 0 12px;
}
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.bg-grid, .bg-glow {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
}
.bg-grid {
  background-image:
    linear-gradient(rgba(148, 180, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 180, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 75%);
}
.bg-glow {
  background:
    radial-gradient(900px 420px at 12% -8%, rgba(94, 234, 212, 0.16), transparent 60%),
    radial-gradient(800px 480px at 92% 8%, rgba(139, 124, 255, 0.18), transparent 58%);
}
header, main, footer { position: relative; z-index: 1; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(7, 11, 20, 0.72);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.site-header.is-scrolled { background: rgba(7, 11, 20, 0.9); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; }
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}
.logo img {
  height: 36px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
}
.site-footer .logo img { height: 32px; }
.nav { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
.nav a { color: #b7c4d8; font-size: 14px; }
.nav a:hover, .nav a.is-active { color: #fff; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 20px; border-radius: 999px; border: 1px solid transparent;
  font-size: 14px; cursor: pointer; text-decoration: none;
  background: linear-gradient(135deg, #5eead4, #2dd4bf);
  color: #06201c;
  font-weight: 700;
  box-shadow: 0 0 24px var(--glow);
}
.btn:hover { color: #06201c; filter: brightness(1.08); }
.btn-ghost {
  background: transparent; color: #fff; border-color: rgba(255,255,255,.22);
  box-shadow: none; border-radius: 999px; padding: 8px 16px;
}
.btn-ghost:hover { color: #fff; border-color: var(--accent); }
.btn-line {
  background: transparent; color: #fff; border-color: rgba(255,255,255,.28);
  box-shadow: none;
}
.btn-line:hover { color: #fff; border-color: var(--accent); }
.nav-toggle { display: none; background: none; border: 0; color: #fff; font-size: 22px; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 108px 0 72px;
  min-height: 78vh;
  display: flex;
  align-items: center;
}
.hero-orb {
  position: absolute; border-radius: 50%; filter: blur(40px); pointer-events: none;
}
.hero-orb-a {
  width: 420px; height: 420px; right: 8%; top: 8%;
  background: rgba(139, 124, 255, 0.28);
}
.hero-orb-b {
  width: 340px; height: 340px; right: 22%; bottom: 4%;
  background: rgba(94, 234, 212, 0.18);
}
.hero-inner { position: relative; }
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--accent); font-size: 13px; letter-spacing: 0.22em;
  text-transform: uppercase; margin-bottom: 18px;
}
.kicker-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 12px var(--accent); animation: pulse 2.2s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .45; }
}
.hero h1 {
  font-size: clamp(42px, 7vw, 76px);
  max-width: 14ch;
  margin: 0 0 22px;
  background: linear-gradient(120deg, #f7fbff 18%, #7ee7ff 52%, #c4b5fd 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.hero p.lead { font-size: 18px; color: var(--muted); max-width: 40em; margin: 0 0 32px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 220px));
  gap: 18px; margin: 48px 0 28px; max-width: 760px;
}
.hero-stats div {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.hero-stats strong { display: block; font-size: 22px; color: #fff; }
.hero-stats span { color: var(--muted); font-size: 13px; }
.platforms { display: flex; flex-wrap: wrap; gap: 8px; }
.platforms span {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  padding: 7px 12px; font-size: 13px; color: #c9d6ea;
  border-radius: 999px;
}

.section { padding: 88px 0; }
.section.alt {
  background: linear-gradient(180deg, rgba(16, 24, 42, 0.65), rgba(12, 18, 32, 0.4));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-head { display: grid; grid-template-columns: 72px 1fr; gap: 16px; margin-bottom: 36px; align-items: start; }
.section-index {
  font-size: 28px; color: var(--accent); letter-spacing: 0.12em; padding-top: 4px;
}
.section h2 { font-size: clamp(28px, 4vw, 40px); }
.section .intro { color: var(--muted); max-width: 46em; margin: 0; }
.section-cta { margin-top: 32px; }
.grid-3, .grid-4, .grid-2 { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
  border: 1px solid var(--line);
  padding: 26px;
  border-radius: 18px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.card:hover {
  border-color: rgba(94, 234, 212, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0,0,0,.28);
}
.card-icon { display: block; color: var(--accent); font-size: 13px; letter-spacing: 0.16em; margin-bottom: 12px; }
.card h3 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.compare article {
  padding: 32px; border: 1px solid var(--line); border-radius: 18px;
  background: rgba(255,255,255,.03);
}
.compare .geo {
  border-color: rgba(94, 234, 212, 0.45);
  background: linear-gradient(180deg, rgba(94, 234, 212, 0.1), rgba(255,255,255,.02));
}
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
.steps ol { display: contents; padding: 0; margin: 0; }
.steps li {
  list-style: none;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
}
.steps li::before {
  counter-increment: step; content: "0" counter(step);
  display: block; color: var(--accent); font-size: 22px; margin-bottom: 8px;
}
.meta { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.article-card h3 { font-size: 20px; }
.article-card h3 a { color: #f4f7ff; }
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 650; color: #f4f7ff; }
.faq p { color: var(--muted); margin: 8px 0 0; }
.form { display: grid; gap: 12px; }
.form input, .form textarea, .form select {
  width: 100%; padding: 12px 14px;
  border: 1px solid var(--line);
  background: rgba(7, 11, 20, 0.65);
  color: #fff;
  font: inherit;
  border-radius: 12px;
}
.form input:focus, .form textarea:focus {
  outline: 0;
  border-color: rgba(94, 234, 212, 0.6);
  box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.12);
}
.form label { font-size: 13px; color: var(--muted); }
.hp { position: absolute; left: -9999px; }
.notice { padding: 12px 16px; margin-bottom: 16px; border-radius: 12px; }
.notice.ok { background: rgba(94, 234, 212, 0.12); color: var(--accent); }
.notice.err { background: rgba(248, 113, 113, 0.12); color: #fca5a5; }
.page-hero {
  padding: 72px 0 28px;
  border-bottom: 1px solid var(--line);
  background: radial-gradient(700px 240px at 80% 0%, rgba(139, 124, 255, 0.16), transparent 60%);
}
.page-hero h1 { margin: 0 0 8px; font-size: clamp(32px, 5vw, 52px); }
.page-hero .intro { color: var(--muted); max-width: 46em; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.crumbs a { color: var(--muted); }
.prose { max-width: 760px; }
.prose h2 { font-size: 26px; margin: 32px 0 12px; }
.prose p, .prose li { color: #c5d0e2; }
.prose table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; font-size: 14px; }
.key-points {
  background: rgba(94, 234, 212, 0.08);
  border-left: 3px solid var(--accent);
  padding: 16px 20px; margin: 24px 0;
  border-radius: 0 12px 12px 0;
}
.key-points li { margin: 6px 0; }
.pager { display: flex; gap: 8px; margin-top: 28px; }
.pager a, .pager span {
  padding: 6px 10px; border: 1px solid var(--line); color: #d7e2f2; border-radius: 8px;
}
.site-footer {
  background: #05080f;
  color: #9aa8bd;
  padding: 56px 0 24px;
  margin-top: 0;
  border-top: 1px solid var(--line);
}
.site-footer a { color: #d7e2f2; }
.site-footer h3 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.footer-tagline { color: #fff; font-size: 16px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.copyright {
  border-top: 1px solid var(--line);
  margin-top: 36px;
  padding-top: 18px;
  font-size: 13px;
  color: #7b889c;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
}
.filings { display: flex; flex-wrap: wrap; gap: 10px 16px; }
.filings a { color: #9aa8bd; display: inline-flex; align-items: center; gap: 6px; }
.filings a:hover { color: #fff; }
.ga-icon { flex: none; }
.packages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.packages article {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  padding: 28px;
  border-radius: 18px;
}
.packages .featured {
  border-color: rgba(94, 234, 212, 0.5);
  box-shadow: 0 0 0 1px rgba(94, 234, 212, 0.25) inset, 0 20px 50px rgba(0,0,0,.25);
}
.lead-box { display: grid; grid-template-columns: 1.15fr .85fr; gap: 32px; align-items: start; }
.lead-panel {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: 18px;
  padding: 28px;
}

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4, .compare, .steps, .packages, .footer-grid, .lead-box, .hero-stats, .section-head {
    grid-template-columns: 1fr;
  }
  .nav { display: none; }
  .nav.open {
    display: flex; flex-direction: column; position: absolute;
    left: 0; right: 0; top: 76px;
    background: rgba(7, 11, 20, 0.96);
    padding: 16px 20px 24px;
    border-bottom: 1px solid var(--line);
  }
  .nav-toggle { display: block; }
  .hero { padding-top: 64px; min-height: 0; }
}