:root {
  --bg: #0b1220;
  --bg-elev: #111a2e;
  --surface: #16213a;
  --border: #22314f;
  --text: #e6edf7;
  --text-dim: #a4b0c7;
  --brand: #2f80ed;
  --brand-2: #56ccf2;
  --up: #16c784;
  --down: #ea3943;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  --radius: 14px;
  --max: 1160px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 18, 32, .85);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
  font-size: 18px;
}
.brand .logo {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #061024;
  font-weight: 900;
}
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--text-dim); font-size: 14px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.lang-switch {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--text-dim);
}
.lang-switch:hover { color: var(--text); border-color: var(--brand); }

.lang-toggle {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
  background: rgba(255, 255, 255, .02);
}
.lang-toggle a {
  padding: 4px 12px;
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.2;
  font-weight: 500;
  text-decoration: none;
}
.lang-toggle a:hover { color: var(--text); text-decoration: none; }
.lang-toggle a.active {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #061024;
  font-weight: 700;
  cursor: default;
}

/* Hero */
.hero {
  padding: 84px 0 60px;
  background:
    radial-gradient(1000px 400px at 80% -10%, rgba(47,128,237,.25), transparent 60%),
    radial-gradient(600px 260px at 10% 10%, rgba(86,204,242,.15), transparent 60%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--brand-2);
  padding: 6px 10px;
  border: 1px solid rgba(86,204,242,.35);
  border-radius: 999px;
  margin-bottom: 18px;
}
h1 {
  font-size: 44px;
  line-height: 1.15;
  margin: 0 0 18px;
  letter-spacing: -.01em;
}
h1 .accent { background: linear-gradient(90deg, var(--brand-2), var(--brand)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 0 28px;
}
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .06s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #061024; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--brand); }

/* Quotes mock */
.quotes-card {
  background: linear-gradient(180deg, var(--bg-elev), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.quotes-card h3 {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--text-dim);
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.quotes-card .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--up); display: inline-block; margin-right: 6px;
  box-shadow: 0 0 0 4px rgba(22,199,132,.15);
}
.quote-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  padding: 10px 6px;
  border-top: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.quote-row:first-of-type { border-top: 0; }
.pair { font-weight: 600; }
.pair small { color: var(--text-dim); font-weight: 400; margin-left: 6px; }
.price { color: var(--text); min-width: 92px; text-align: right; }
.chg { min-width: 74px; text-align: right; font-size: 13px; }
.chg.up { color: var(--up); }
.chg.down { color: var(--down); }

/* Features */
section { padding: 72px 0; }
.section-title {
  font-size: 28px;
  margin: 0 0 8px;
  letter-spacing: -.01em;
}
.section-sub { color: var(--text-dim); margin: 0 0 36px; }

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.feature .icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(47,128,237,.15);
  color: var(--brand-2);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 14px;
}
.feature h4 { margin: 0 0 6px; font-size: 17px; }
.feature p { margin: 0; color: var(--text-dim); font-size: 14px; }

/* Legal pages */
.legal {
  padding: 60px 0 90px;
}
.legal .container { max-width: 860px; }
.legal h1 { font-size: 32px; margin-bottom: 6px; }
.legal .meta { color: var(--text-dim); margin-bottom: 30px; font-size: 14px; }
.legal h2 {
  font-size: 20px;
  margin-top: 34px;
  margin-bottom: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.legal h3 { font-size: 16px; margin: 18px 0 8px; color: var(--brand-2); }
.legal p, .legal li { color: #cfd8ea; }
.legal ul, .legal ol { padding-left: 22px; }
.legal li { margin-bottom: 6px; }
.legal .callout {
  background: rgba(47,128,237,.08);
  border: 1px solid rgba(47,128,237,.35);
  border-radius: 12px;
  padding: 14px 16px;
  color: #dbe6fa;
  margin: 18px 0;
}
.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 4px;
  font-size: 14px;
}
.legal th, .legal td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.legal th { background: var(--surface); color: var(--text); font-weight: 600; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0 50px;
  color: var(--text-dim);
  font-size: 13px;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-grid a { color: var(--text-dim); margin-right: 16px; }
.footer-grid a:hover { color: var(--text); }

/* Responsive */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  h1 { font-size: 34px; }
  .features { grid-template-columns: 1fr; }
  .nav-links { gap: 14px; }
  .nav-links > a { display: none; }
  .nav-links a.lang-switch { display: inline-block; }
  .nav-links .lang-toggle { display: inline-flex; }
}