:root {
  --background: #fafafa;
  --foreground: #0f172a;
  --muted: #f1f5f9;
  --muted-foreground: #64748b;
  --accent: #0052ff;
  --accent-secondary: #4d7cff;
  --accent-foreground: #ffffff;
  --border: #e2e8f0;
  --card: #ffffff;
  --ring: #0052ff;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 10px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 18px 38px rgba(15, 23, 42, 0.1);
  --shadow-accent: 0 8px 24px rgba(0, 82, 255, 0.28);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--foreground);
  background:
    radial-gradient(800px 360px at 7% -5%, rgba(0, 82, 255, 0.08), transparent 62%),
    radial-gradient(900px 380px at 96% 2%, rgba(77, 124, 255, 0.08), transparent 58%),
    var(--background);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.68;
}

a { color: inherit; }

.container { width: min(1120px, 92%); margin: 0 auto; }

.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  background: rgba(250, 250, 250, 0.82);
  backdrop-filter: blur(18px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--foreground);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-link {
  color: var(--muted-foreground);
  font-weight: 650;
  text-decoration: none;
  transition: color 180ms ease, transform 180ms ease;
}

.nav-link:hover { color: var(--foreground); transform: translateY(-1px); }

.language-select {
  min-height: 44px;
  padding: 0 36px 0 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--foreground);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  font: inherit;
  font-weight: 650;
}

.cta {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 14px;
  font-weight: 750;
  text-decoration: none;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease, background 200ms ease, filter 200ms ease;
}

.cta-main {
  color: var(--accent-foreground);
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  box-shadow: var(--shadow-sm);
}

.cta-main:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: var(--shadow-accent);
}

.cta-main::after { content: "→"; transition: transform 200ms ease; }
.cta-main:hover::after { transform: translateX(3px); }

.cta-sub {
  color: var(--foreground);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-sm);
}

.cta-sub:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 82, 255, 0.28);
  background: var(--card);
  box-shadow: var(--shadow-md);
}

.hero { padding: 104px 0 72px; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  color: var(--foreground);
  font-weight: 700;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 820px;
  margin: 18px 0 20px;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 1.03;
}

h2 {
  margin: 14px 0 18px;
  font-size: clamp(32px, 4.3vw, 54px);
  line-height: 1.12;
}

h3 {
  margin: 0 0 10px;
  color: var(--foreground);
  font-size: 19px;
  font-weight: 760;
  letter-spacing: -0.015em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(0, 82, 255, 0.22);
  border-radius: 999px;
  background: rgba(0, 82, 255, 0.055);
  color: var(--accent);
  padding: 8px 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

.sub {
  max-width: 760px;
  color: var(--muted-foreground);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-visual {
  position: relative;
  min-height: 460px;
  border: 1px solid var(--border);
  border-radius: 34px;
  background:
    radial-gradient(circle at 35% 25%, rgba(0, 82, 255, 0.12), transparent 38%),
    linear-gradient(145deg, #ffffff, #f8fafc);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px dashed rgba(0, 82, 255, 0.28);
  border-radius: 999px;
  animation: slow-spin 60s linear infinite;
}

.hero-visual::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -90px;
  width: 230px;
  height: 230px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  filter: blur(8px);
  opacity: 0.88;
}

.orbit-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 134px;
  height: 134px;
  transform: translate(-50%, -50%);
  border-radius: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  box-shadow: var(--shadow-accent);
}

.orbit-core::before,
.orbit-core::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
}

.orbit-core::before { width: 18px; height: 18px; top: 28px; left: 28px; }
.orbit-core::after { width: 46px; height: 8px; right: 28px; bottom: 34px; }

.floating-card {
  position: absolute;
  z-index: 2;
  width: min(230px, 46%);
  padding: 16px;
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
  animation: float-card 4.8s ease-in-out infinite;
}

.floating-card strong { display: block; color: var(--foreground); font-size: 14px; }
.floating-card span { color: var(--muted-foreground); font-size: 13px; }
.floating-card.one { top: 62px; left: 34px; }
.floating-card.two { right: 32px; bottom: 78px; animation-duration: 5.6s; animation-delay: -1.2s; }

.status-pill {
  position: absolute;
  right: 34px;
  top: 44px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border-radius: 999px;
  background: var(--foreground);
  color: #ffffff;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 750;
  box-shadow: var(--shadow-lg);
}

.status-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #22c55e;
  animation: pulse-dot 2s ease-in-out infinite;
}

.section { padding: 92px 0; }

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.cards,
.pricing {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card,
.price,
.panel {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--card);
  box-shadow: var(--shadow-sm);
}

.card,
.price { padding: 26px; transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease; }
.card:hover,
.price:hover { transform: translateY(-5px); border-color: rgba(0, 82, 255, 0.22); box-shadow: var(--shadow-lg); }

.card::before {
  content: "";
  display: block;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border-radius: 15px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  box-shadow: 0 10px 24px rgba(0, 82, 255, 0.22);
}

.card p,
.price li,
.panel li,
.faq p { color: var(--muted-foreground); }
.card p { margin: 0; }

.inverted {
  position: relative;
  overflow: hidden;
  padding: 104px 0;
  color: rgba(255, 255, 255, 0.88);
  background:
    radial-gradient(circle at 15% 10%, rgba(77, 124, 255, 0.22), transparent 28%),
    radial-gradient(circle at 85% 80%, rgba(0, 82, 255, 0.18), transparent 32%),
    var(--foreground);
}

.inverted::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.16) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.22;
}

.inverted > .container { position: relative; z-index: 1; }
.inverted h2,
.inverted h3 { color: #ffffff; }
.inverted .sub { color: rgba(255, 255, 255, 0.72); }
.inverted .section-label { color: #ffffff; border-color: rgba(255, 255, 255, 0.2); background: rgba(255, 255, 255, 0.08); }
.inverted .section-label::before { background: #ffffff; }

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.proof-card {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
}

.proof-card strong { display: block; color: #ffffff; font-size: 18px; margin-bottom: 8px; }
.proof-card span { color: rgba(255, 255, 255, 0.68); }

.price .amount {
  margin: 12px 0 18px;
  font-size: 32px;
  font-weight: 850;
  letter-spacing: -0.03em;
}

.price ul,
.panel ul { margin: 0; padding-left: 20px; }
.highlight { padding: 2px; border: 0; background: linear-gradient(135deg, var(--accent), var(--accent-secondary)); box-shadow: var(--shadow-accent); }
.highlight > * { position: relative; z-index: 1; }
.highlight::after { content: ""; position: absolute; inset: 2px; border-radius: 22px; background: var(--card); }
.highlight h3,
.highlight .amount,
.highlight ul { position: relative; z-index: 2; }

.faq details {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--shadow-sm);
  padding: 18px 20px;
  margin-bottom: 12px;
}

.faq summary { cursor: pointer; color: var(--foreground); font-weight: 760; }

.final-cta .panel {
  overflow: hidden;
  padding: 48px;
  text-align: center;
  background:
    radial-gradient(circle at 20% 0%, rgba(0, 82, 255, 0.14), transparent 30%),
    var(--card);
}

.footer {
  margin-top: 0;
  padding: 30px 0 46px;
  border-top: 1px solid var(--border);
  color: var(--muted-foreground);
}

select:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(0, 82, 255, 0.28);
  outline-offset: 3px;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: 0.68; }
}

@keyframes slow-spin { to { transform: rotate(360deg); } }

@keyframes float-card {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 960px) {
  .hero-grid,
  .cards,
  .pricing,
  .proof-grid { grid-template-columns: 1fr; }
  .hero { padding: 72px 0 48px; }
  .hero-visual { min-height: 360px; }
  .section { padding: 72px 0; }
}

@media (max-width: 640px) {
  .nav-inner { flex-wrap: wrap; }
  .nav-links { width: 100%; justify-content: space-between; gap: 8px; }
  .language-select { max-width: 132px; }
  h1 { font-size: clamp(40px, 14vw, 58px); }
  .hero-visual { display: none; }
  .cta { width: 100%; }
  .hero-actions { width: 100%; }
  .final-cta .panel { padding: 30px 20px; }
}