:root {
  --bg: #050814;
  --bg-elev: #0b1020;
  --bg-card: rgba(16, 22, 42, 0.72);
  --line: rgba(120, 170, 255, 0.14);
  --text: #e8eefc;
  --muted: #93a0c2;
  --cyan: #3ee0d0;
  --blue: #4d8dff;
  --violet: #8b7bff;
  --gold: #f5c15c;
  --danger: #ff6b8a;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
  --radius: 22px;
  --max: 1180px;
  --nav-h: 76px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(900px 500px at 12% -10%, rgba(61, 224, 208, 0.16), transparent 55%),
    radial-gradient(700px 480px at 92% 8%, rgba(77, 141, 255, 0.18), transparent 50%),
    radial-gradient(800px 600px at 50% 110%, rgba(139, 123, 255, 0.12), transparent 55%);
}

img {
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  backdrop-filter: blur(18px);
  background: rgba(5, 8, 20, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav {
  position: relative;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  object-fit: cover;
  box-shadow: 0 0 24px rgba(62, 224, 208, 0.28);
}

.hero-split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
  align-items: center;
}

.showcase-img {
  width: 100%;
  border-radius: 22px;
  display: block;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.showcase-wrap {
  margin: 8px 0 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  transition: 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-cta {
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  cursor: pointer;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 700;
  font-size: 14px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #4aa8ff);
  color: #041218;
  box-shadow: 0 10px 28px rgba(62, 224, 208, 0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn-gold {
  background: linear-gradient(135deg, #ffe08a, var(--gold));
  color: #2a1b04;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
}

.hero {
  padding: 88px 0 56px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--cyan);
  font-size: 13px;
  margin-bottom: 18px;
  background: rgba(62, 224, 208, 0.06);
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(36px, 6vw, 64px);
  max-width: 16ch;
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
}

.lead {
  color: var(--muted);
  font-size: 18px;
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 28px 0 36px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  max-width: 720px;
}

.stat {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-card);
}

.stat b {
  display: block;
  font-size: 28px;
  color: var(--cyan);
}

.stat span {
  color: var(--muted);
  font-size: 13px;
}

.section {
  padding: 78px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 42px;
}

.section-head p {
  color: var(--muted);
  margin: 0 auto;
  max-width: 62ch;
}

.grid-3,
.grid-4,
.grid-2 {
  display: grid;
  gap: 18px;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  background: rgba(77, 141, 255, 0.14);
  font-size: 20px;
}

.region-meta {
  color: var(--cyan);
  font-weight: 700;
  margin: 8px 0 6px;
}

.live-bar {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  justify-content: center;
  color: var(--muted);
}

.live-bar strong {
  color: var(--text);
}

.bars {
  display: grid;
  gap: 14px;
}

.bar-row {
  display: grid;
  grid-template-columns: 140px 1fr 90px;
  gap: 12px;
  align-items: center;
}

.bar-track {
  height: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  transition: width 1.1s ease;
}

.pricing {
  align-items: stretch;
}

.price {
  font-size: 44px;
  font-weight: 800;
  margin: 8px 0 4px;
}

.price small {
  font-size: 16px;
  color: var(--muted);
  font-weight: 500;
}

.plan-list {
  padding-left: 18px;
  color: var(--muted);
}

.plan-hot {
  position: relative;
  outline: 1px solid rgba(245, 193, 92, 0.5);
}

.badge {
  position: absolute;
  top: -12px;
  right: 18px;
  background: var(--gold);
  color: #2a1b04;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 999px;
}

.check-list {
  display: grid;
  gap: 10px;
  color: var(--muted);
}

.cta-band {
  text-align: center;
  padding: 48px 28px;
  border-radius: 28px;
  background:
    linear-gradient(160deg, rgba(62, 224, 208, 0.14), rgba(77, 141, 255, 0.08)),
    var(--bg-elev);
  border: 1px solid var(--line);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 28px;
  color: var(--muted);
  font-size: 14px;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.download-hero {
  padding: 72px 0 28px;
}

.platform-grid .card {
  display: flex;
  flex-direction: column;
  min-height: 280px;
}

.platform-grid .meta {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 12px;
}

.platform-grid .btn {
  margin-top: auto;
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 16px;
}

.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  align-items: start;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-weight: 800;
  background: linear-gradient(135deg, rgba(62, 224, 208, 0.2), rgba(77, 141, 255, 0.2));
  border: 1px solid var(--line);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

th {
  background: rgba(255, 255, 255, 0.03);
  color: var(--cyan);
}

.page-404 {
  min-height: calc(100vh - 180px);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 60px 0;
}

.page-404 h1 {
  max-width: none;
  font-size: clamp(72px, 14vw, 160px);
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hidden-nav {
  display: none;
}

.crumb {
  padding: 18px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.crumb a {
  color: var(--cyan);
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0 18px;
  background: var(--bg-card);
  margin-bottom: 12px;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  padding: 16px 0;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item[open] summary {
  color: var(--cyan);
}

.seo-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.seo-links a {
  color: var(--cyan);
  font-size: 13px;
}

@media (max-width: 1180px) {
  .grid-3,
  .grid-4,
  .grid-2,
  .stats,
  .hero-split {
    grid-template-columns: 1fr;
  }

  .bar-row {
    grid-template-columns: 1fr;
  }

  .menu-toggle {
    display: grid;
    place-items: center;
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav.open .nav-links,
  .nav.open .nav-cta {
    display: flex;
    flex-direction: column;
    position: absolute;
    left: 0;
    right: 0;
    top: var(--nav-h);
    background: #090e1c;
    border-bottom: 1px solid var(--line);
    padding: 16px 20px 20px;
    align-items: stretch;
  }
}