/* fv-binance.com — Green-Cyan CDP Data style, inspired by segment.com */
:root {
  --bg-dark:   #0a1628;
  --bg-mid:    #0e1e38;
  --bg-card:   #111f3a;
  --bg-light:  #f4faf8;
  --accent1:   #00d4aa;   /* primary cyan-green */
  --accent2:   #00b894;   /* deeper teal */
  --accent3:   #34d3fe;   /* electric blue-cyan */
  --text-main: #e8f5f2;
  --text-muted:#8ab8b0;
  --text-dark: #0d1f35;
  --white:     #ffffff;
  --radius:    10px;
  --radius-lg: 18px;
  --shadow:    0 4px 24px rgba(0,212,170,.12);
  --shadow-lg: 0 8px 48px rgba(0,212,170,.18);
  --container: 1180px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: var(--font); }

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

/* ============================
   ANNOUNCEMENT BAR
   ============================ */
.ann-bar {
  background: linear-gradient(90deg, var(--accent2) 0%, var(--accent3) 100%);
  color: var(--bg-dark);
  font-size: 0.84rem;
  font-weight: 600;
  text-align: center;
  padding: 9px 16px;
  letter-spacing: 0.01em;
}
.ann-bar button {
  background: none;
  border: none;
  color: var(--bg-dark);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  min-height: 0;
}

/* ============================
   NAV
   ============================ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,212,170,.12);
}
.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.nav-logo svg { flex-shrink: 0; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color .2s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--accent1); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* ============================
   BUTTONS
   ============================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--accent1) 0%, var(--accent2) 100%);
  color: var(--bg-dark);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 11px 22px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: opacity .2s, transform .15s;
  white-space: nowrap;
  min-height: 44px;
}
.btn-primary:hover { opacity: .88; transform: translateY(-1px); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--accent1);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 11px 22px;
  border-radius: 8px;
  border: 1.5px solid var(--accent1);
  cursor: pointer;
  transition: background .2s, color .2s;
  white-space: nowrap;
  min-height: 44px;
}
.btn-outline:hover { background: rgba(0,212,170,.1); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 11px 16px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: color .2s;
  white-space: nowrap;
  min-height: 44px;
}
.btn-ghost:hover { color: var(--white); }

.btn-lg {
  font-size: 1.02rem;
  padding: 14px 32px;
  min-height: 52px;
}

/* ============================
   HERO
   ============================ */
.hero {
  padding: 96px 0 80px;
  background: radial-gradient(ellipse 80% 50% at 60% 40%, rgba(0,212,170,.07) 0%, transparent 70%),
              var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  right: -80px;
  top: -40px;
  width: 680px;
  height: 680px;
  background: radial-gradient(ellipse, rgba(52,211,254,.06) 0%, transparent 65%);
  pointer-events: none;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,212,170,.1);
  color: var(--accent1);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 20px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 22px;
}
.hero-title .accent { color: var(--accent1); }
.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 480px;
  line-height: 1.7;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.hero-note {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.hero-note span { color: var(--accent1); }

/* Hero graphic / data visualization */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.data-dashboard {
  background: var(--bg-card);
  border: 1px solid rgba(0,212,170,.18);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.dash-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.dash-badge {
  background: rgba(0,212,170,.15);
  color: var(--accent1);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 12px;
}
.dash-metric {
  margin-bottom: 18px;
}
.dash-metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.dash-metric-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}
.dash-metric-value .unit {
  font-size: 1rem;
  color: var(--accent1);
  margin-left: 2px;
}
.dash-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 70px;
  margin-bottom: 16px;
}
.dash-bar {
  flex: 1;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(to top, var(--accent2), var(--accent3));
  opacity: 0.7;
  transition: opacity .2s;
  min-width: 0;
}
.dash-bar:hover { opacity: 1; }
.dash-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-top: 1px solid rgba(255,255,255,.05);
}
.dash-row-label { font-size: 0.78rem; color: var(--text-muted); }
.dash-row-val { font-size: 0.78rem; font-weight: 700; color: var(--accent1); }

/* Floating badges */
.float-badge {
  position: absolute;
  background: var(--bg-mid);
  border: 1px solid rgba(0,212,170,.2);
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent1);
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0,0,0,.3);
}
.float-badge.top-left { top: -18px; left: -20px; }
.float-badge.bottom-right { bottom: -14px; right: -16px; color: var(--accent3); border-color: rgba(52,211,254,.2); }

/* ============================
   STATS BAND
   ============================ */
.stats-band {
  background: var(--bg-mid);
  border-top: 1px solid rgba(0,212,170,.08);
  border-bottom: 1px solid rgba(0,212,170,.08);
  padding: 48px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item {}
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent1);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* ============================
   FEATURES SECTION
   ============================ */
.features {
  padding: 96px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 64px;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.section-label::before, .section-label::after {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--accent1);
  opacity: .5;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.65;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(0,212,170,.1);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: border-color .25s, transform .2s;
}
.feature-card:hover {
  border-color: rgba(0,212,170,.35);
  transform: translateY(-3px);
}
.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(0,212,170,.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ============================
   HOW IT WORKS  (3-column numbered)
   ============================ */
.how-it-works {
  padding: 96px 0;
  background: var(--bg-mid);
}
.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 64px;
  position: relative;
}
.how-steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(50% - 33%);
  width: 66%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent2), var(--accent3));
  opacity: .25;
}
.step-item {
  text-align: center;
  padding: 0 12px;
  position: relative;
}
.step-num {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent1), var(--accent3));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--bg-dark);
  margin: 0 auto 20px;
}
.step-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.step-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ============================
   DATA STREAM / MARQUEE
   ============================ */
.data-stream {
  padding: 48px 0;
  overflow: hidden;
  border-top: 1px solid rgba(0,212,170,.06);
  border-bottom: 1px solid rgba(0,212,170,.06);
}
.stream-track {
  display: flex;
  gap: 48px;
  animation: streamScroll 28s linear infinite;
  width: max-content;
}
.stream-item {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}
.stream-item .dot {
  width: 6px;
  height: 6px;
  background: var(--accent1);
  border-radius: 50%;
}
.stream-item strong { color: var(--accent1); }
@keyframes streamScroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================
   TRUST / SECURITY
   ============================ */
.trust {
  padding: 96px 0;
}
.trust-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.trust-visual {
  background: var(--bg-card);
  border: 1px solid rgba(0,212,170,.12);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.trust-badge-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.trust-badge {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(0,212,170,.05);
  border-radius: 10px;
  padding: 14px 18px;
  border: 1px solid rgba(0,212,170,.1);
}
.trust-badge-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.trust-badge-text strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 2px;
}
.trust-badge-text span {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.trust-content {}
.trust-content .section-title { text-align: left; }
.trust-content .section-sub { text-align: left; margin: 0 0 32px; }
.trust-stat-row {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 32px;
}
.trust-stat-box {
  flex: 1;
  min-width: 120px;
  background: rgba(0,212,170,.06);
  border-radius: 10px;
  padding: 16px 20px;
  border: 1px solid rgba(0,212,170,.1);
}
.trust-stat-box .num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent1);
  display: block;
}
.trust-stat-box .lab {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================
   PLATFORM / DEVICES
   ============================ */
.platform {
  padding: 96px 0;
  background: var(--bg-mid);
}
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}
.platform-card {
  background: var(--bg-dark);
  border: 1px solid rgba(0,212,170,.1);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: border-color .2s, transform .2s;
}
.platform-card:hover {
  border-color: rgba(0,212,170,.3);
  transform: translateY(-2px);
}
.platform-icon {
  width: 56px;
  height: 56px;
  background: rgba(0,212,170,.08);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.platform-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}
.platform-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}
.platform-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  background: rgba(0,212,170,.12);
  color: var(--accent1);
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid rgba(0,212,170,.2);
  border-radius: 7px;
  padding: 9px 12px;
  cursor: pointer;
  transition: background .2s;
  min-height: 40px;
}
.platform-btn:hover { background: rgba(0,212,170,.22); }

/* ============================
   TESTIMONIALS
   ============================ */
.testimonials {
  padding: 96px 0;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid rgba(0,212,170,.1);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.stars {
  display: flex;
  gap: 2px;
  margin-bottom: 14px;
}
.star {
  color: var(--accent1);
  font-size: 1rem;
}
.testimonial-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 10px;
}
.author-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--bg-dark);
  flex-shrink: 0;
}
.author-name {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--white);
}
.author-role {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================
   CTA SECTION
   ============================ */
.cta-section {
  padding: 96px 0;
  background: linear-gradient(135deg, rgba(0,212,170,.08) 0%, rgba(52,211,254,.05) 100%);
  border-top: 1px solid rgba(0,212,170,.1);
}
.cta-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 18px;
}
.cta-title .accent { color: var(--accent1); }
.cta-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 36px;
  line-height: 1.65;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: center;
}

/* ============================
   FOOTER
   ============================ */
.site-footer {
  background: #060f1e;
  border-top: 1px solid rgba(0,212,170,.1);
  padding: 64px 0 36px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand {}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 240px;
  margin-bottom: 20px;
}
.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color .2s;
}
.footer-links a:hover { color: var(--accent1); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-legal {
  display: flex;
  gap: 20px;
}
.footer-legal a {
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: color .2s;
}
.footer-legal a:hover { color: var(--accent1); }

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .hero-title { font-size: 2rem; }
  .how-steps { grid-template-columns: 1fr; }
  .how-steps::before { display: none; }
  .trust-split { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}

@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .cta-actions { flex-direction: column; align-items: center; }
}

@media (max-width: 390px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 1.75rem; }
  .platform-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}