/* eg-binance.com — sky-blue / aqua theme, coda.io-inspired layout */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sky: #0ea5e9;
  --sky-deep: #0284c7;
  --sky-light: #e0f2fe;
  --aqua: #06b6d4;
  --aqua-light: #cffafe;
  --dark: #0c1a29;
  --dark2: #122338;
  --mid: #1e3a54;
  --text: #f0f8ff;
  --muted: #8ab4cc;
  --card-bg: rgba(14,42,68,0.7);
  --border: rgba(14,165,233,0.18);
  --radius: 14px;
  --radius-lg: 22px;
  --max: 1180px;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark2); }
::-webkit-scrollbar-thumb { background: var(--sky-deep); border-radius: 3px; }

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

/* ── Nav ── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(12,26,41,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; max-width: var(--max); margin: 0 auto; padding: 0 24px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo-text { font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--sky); }
.nav-cta {
  display: flex; gap: 10px;
}
.btn-outline {
  padding: 8px 20px; border: 1.5px solid var(--sky); border-radius: 8px;
  color: var(--sky); background: transparent; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.2s; text-decoration: none; display: inline-flex; align-items: center;
  min-height: 44px;
}
.btn-outline:hover { background: rgba(14,165,233,0.1); }
.btn-primary {
  padding: 8px 20px; border: none; border-radius: 8px;
  background: var(--sky); color: #fff; font-size: 14px; font-weight: 700;
  cursor: pointer; transition: all 0.2s; text-decoration: none; display: inline-flex; align-items: center;
  min-height: 44px;
}
.btn-primary:hover { background: var(--sky-deep); transform: translateY(-1px); }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

/* ── Hero ── */
.hero {
  position: relative; overflow: hidden;
  padding: 96px 0 80px;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(14,165,233,0.22) 0%, transparent 70%),
              radial-gradient(ellipse 50% 40% at 90% 60%, rgba(6,182,212,0.14) 0%, transparent 60%),
              var(--dark);
}
.hero-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(14,165,233,0.12); border: 1px solid rgba(14,165,233,0.3);
  border-radius: 100px; padding: 6px 14px; font-size: 13px; color: var(--sky);
  font-weight: 600; margin-bottom: 20px;
}
.hero-badge-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--sky); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.hero h1 {
  font-size: clamp(36px, 5vw, 56px); font-weight: 900; line-height: 1.1;
  letter-spacing: -1.5px; margin-bottom: 20px; color: #fff;
}
.hero h1 em { font-style: normal; color: var(--sky); }
.hero-desc {
  font-size: 17px; color: var(--muted); line-height: 1.7; margin-bottom: 32px; max-width: 480px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-hero-primary {
  padding: 14px 32px; background: var(--sky); color: #fff;
  border: none; border-radius: var(--radius); font-size: 16px; font-weight: 700;
  cursor: pointer; transition: all 0.2s; min-height: 52px; display: inline-flex; align-items: center; gap: 8px;
}
.btn-hero-primary:hover { background: var(--sky-deep); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(14,165,233,0.35); }
.btn-hero-secondary {
  padding: 14px 32px; background: rgba(14,165,233,0.1); color: var(--sky);
  border: 1.5px solid rgba(14,165,233,0.3); border-radius: var(--radius);
  font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.2s;
  min-height: 52px; display: inline-flex; align-items: center; gap: 8px; text-decoration: none;
}
.btn-hero-secondary:hover { background: rgba(14,165,233,0.18); }
.hero-stats { display: flex; gap: 32px; margin-top: 40px; flex-wrap: wrap; }
.hero-stat-num { font-size: 26px; font-weight: 900; color: #fff; }
.hero-stat-label { font-size: 13px; color: var(--muted); margin-top: 2px; }

/* Hero visual */
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; }
.hero-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(16px);
  width: 100%;
  max-width: 400px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}
.hero-card-title { font-size: 13px; color: var(--muted); margin-bottom: 16px; font-weight: 500; }
.ticker-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 0; border-bottom: 1px solid rgba(14,165,233,0.1);
}
.ticker-row:last-child { border-bottom: none; }
.ticker-name { font-size: 15px; font-weight: 700; }
.ticker-sub { font-size: 12px; color: var(--muted); }
.ticker-price { text-align: right; }
.ticker-val { font-size: 15px; font-weight: 700; }
.ticker-chg { font-size: 12px; }
.up { color: #22d3a0; }
.down { color: #f87171; }
.hero-card-footer {
  margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
}
.hcf-label { font-size: 12px; color: var(--muted); }
.hcf-action {
  font-size: 13px; color: var(--sky); font-weight: 600; cursor: pointer;
  background: none; border: none; padding: 8px 0;
}

/* ── Trust band ── */
.trust-band {
  background: rgba(14,42,68,0.5);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.trust-band-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px;
}
.trust-item {
  display: flex; align-items: center; gap: 10px;
}
.trust-icon { width: 36px; height: 36px; color: var(--sky); flex-shrink: 0; }
.trust-label { font-size: 14px; font-weight: 600; color: var(--text); }
.trust-sub { font-size: 12px; color: var(--muted); }

/* ── Download section ── */
.download-section { padding: 96px 0; }
.section-eyebrow { font-size: 13px; font-weight: 700; color: var(--sky); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px; }
.section-title { font-size: clamp(28px, 3.5vw, 44px); font-weight: 900; letter-spacing: -1px; color: #fff; margin-bottom: 14px; line-height: 1.15; }
.section-desc { font-size: 16px; color: var(--muted); max-width: 560px; line-height: 1.7; margin-bottom: 48px; }
.platform-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 40px; }
.platform-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 24px;
  text-align: center; cursor: pointer; transition: all 0.2s;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.platform-card:hover { border-color: var(--sky); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(14,165,233,0.2); }
.platform-icon { width: 48px; height: 48px; }
.platform-name { font-size: 16px; font-weight: 700; }
.platform-detail { font-size: 13px; color: var(--muted); }
.platform-btn {
  width: 100%; padding: 11px; background: var(--sky); border: none; border-radius: 8px;
  color: #fff; font-size: 14px; font-weight: 700; cursor: pointer; transition: all 0.2s;
  min-height: 44px;
}
.platform-btn:hover { background: var(--sky-deep); }

/* ── Features section ── */
.features-section { padding: 80px 0; background: var(--dark2); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card {
  background: rgba(12,26,41,0.6); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 28px;
  transition: all 0.2s;
}
.feature-card:hover { border-color: rgba(14,165,233,0.4); transform: translateY(-2px); }
.feature-icon-wrap {
  width: 52px; height: 52px; border-radius: 12px;
  background: rgba(14,165,233,0.12); display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.feature-icon { width: 26px; height: 26px; color: var(--sky); }
.feature-title { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.feature-desc { font-size: 14px; color: var(--muted); line-height: 1.65; }

/* ── Stats section ── */
.stats-section { padding: 80px 0; }
.stats-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px;
  background: var(--border); border-radius: var(--radius-lg); overflow: hidden;
}
.stat-block {
  background: var(--dark); padding: 40px 32px; text-align: center;
}
.stat-number { font-size: 40px; font-weight: 900; color: var(--sky); line-height: 1; margin-bottom: 8px; }
.stat-label { font-size: 14px; color: var(--muted); font-weight: 500; }

/* ── Steps section ── */
.steps-section { padding: 80px 0; background: var(--dark2); }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; counter-reset: step; }
.step-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 28px; position: relative;
}
.step-num {
  width: 40px; height: 40px; border-radius: 50%; background: var(--sky);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 900; color: #fff; margin-bottom: 18px;
}
.step-title { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.step-desc { font-size: 14px; color: var(--muted); line-height: 1.65; }

/* ── Security section ── */
.security-section { padding: 80px 0; }
.security-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center;
}
.security-list { list-style: none; display: flex; flex-direction: column; gap: 18px; margin-top: 28px; }
.security-item {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 20px;
}
.sec-icon { width: 22px; height: 22px; color: var(--sky); flex-shrink: 0; margin-top: 2px; }
.sec-text-title { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.sec-text-desc { font-size: 13px; color: var(--muted); line-height: 1.5; }
.security-visual { display: flex; justify-content: center; }
.sec-badge-wrap {
  position: relative; width: 320px; height: 320px;
  display: flex; align-items: center; justify-content: center;
}
.sec-ring {
  position: absolute; border-radius: 50%; border: 1.5px solid rgba(14,165,233,0.18);
  animation: ring-spin 24s linear infinite;
}
.sec-ring:nth-child(1) { width: 320px; height: 320px; }
.sec-ring:nth-child(2) { width: 240px; height: 240px; animation-duration: 18s; animation-direction: reverse; }
.sec-ring:nth-child(3) { width: 160px; height: 160px; animation-duration: 12s; }
@keyframes ring-spin { from{transform:rotate(0deg)} to{transform:rotate(360deg)} }
.sec-center {
  width: 100px; height: 100px; border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, var(--sky), var(--aqua));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 48px rgba(14,165,233,0.4); z-index: 1;
}
.sec-center-icon { width: 42px; height: 42px; color: #fff; }
.sec-dot {
  position: absolute; width: 10px; height: 10px; border-radius: 50%; background: var(--sky);
  box-shadow: 0 0 10px var(--sky);
}

/* ── CTA section ── */
.cta-section { padding: 80px 0; }
.cta-box {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
}
.cta-inner {
  background: linear-gradient(135deg, rgba(14,165,233,0.18) 0%, rgba(6,182,212,0.10) 100%);
  border: 1px solid rgba(14,165,233,0.3);
  border-radius: var(--radius-lg); padding: 64px 56px;
  text-align: center; position: relative; overflow: hidden;
}
.cta-inner::before {
  content: ''; position: absolute; top: -60%; left: 50%; transform: translateX(-50%);
  width: 80%; height: 200%; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(14,165,233,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.cta-title { font-size: clamp(28px, 3.5vw, 42px); font-weight: 900; letter-spacing: -1px; margin-bottom: 14px; color: #fff; }
.cta-desc { font-size: 16px; color: var(--muted); margin-bottom: 36px; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-cta-main {
  padding: 16px 40px; background: var(--sky); color: #fff;
  border: none; border-radius: var(--radius); font-size: 17px; font-weight: 800;
  cursor: pointer; transition: all 0.2s; min-height: 56px; display: inline-flex; align-items: center; gap: 8px;
}
.btn-cta-main:hover { background: var(--sky-deep); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(14,165,233,0.4); }
.btn-cta-dl {
  padding: 16px 40px; background: transparent; color: var(--sky);
  border: 1.5px solid rgba(14,165,233,0.4); border-radius: var(--radius);
  font-size: 17px; font-weight: 700; cursor: pointer; transition: all 0.2s;
  min-height: 56px; display: inline-flex; align-items: center; gap: 8px; text-decoration: none;
}
.btn-cta-dl:hover { background: rgba(14,165,233,0.1); }

/* ── Footer ── */
.footer {
  background: var(--dark2);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}
.footer-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  margin-bottom: 40px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand-text { font-size: 18px; font-weight: 800; color: var(--text); }
.footer-about { font-size: 14px; color: var(--muted); line-height: 1.65; max-width: 260px; }
.footer-col-title { font-size: 13px; font-weight: 700; color: var(--text); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: var(--muted); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--sky); }
.footer-bottom {
  max-width: var(--max); margin: 0 auto; padding: 24px 24px 0;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-copyright { font-size: 13px; color: var(--muted); }
.footer-lang { font-size: 13px; color: var(--muted); }
.footer-lang a { color: var(--sky); text-decoration: none; }

/* ── Mobile nav overlay ── */
.mobile-menu {
  display: none; position: fixed; inset: 0; background: rgba(12,26,41,0.97);
  z-index: 200; flex-direction: column; align-items: center; justify-content: center; gap: 28px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 22px; font-weight: 700; color: var(--text); text-decoration: none;
}
.mobile-menu-close {
  position: absolute; top: 20px; right: 24px;
  background: none; border: none; color: var(--muted); font-size: 28px; cursor: pointer;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; }
  .security-inner { grid-template-columns: 1fr; }
  .security-visual { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
}
@media (max-width: 600px) {
  .hero { padding: 64px 0 56px; }
  .hero h1 { font-size: 32px; letter-spacing: -0.8px; }
  .hero-btns { flex-direction: column; }
  .hero-btns button, .hero-btns a { width: 100%; justify-content: center; }
  .platform-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .cta-inner { padding: 40px 24px; }
  .cta-btns { flex-direction: column; }
  .cta-btns button, .cta-btns a { width: 100%; justify-content: center; }
  .trust-band-inner { justify-content: center; }
}