/* tn-binance.com — Intercom-inspired SaaS style, blue + white */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue-dark: #0d47a1;
  --blue-mid:  #1565c0;
  --blue-lite: #1976d2;
  --blue-soft: #e3f0ff;
  --blue-tint: #f0f6ff;
  --text-main: #0d1b3e;
  --text-sub:  #354573;
  --text-muted:#6b7fa8;
  --white:     #ffffff;
  --border:    #d6e4f7;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(21,101,192,.08);
  --shadow-md: 0 6px 32px rgba(21,101,192,.14);
  --max-w:     1160px;
  --font:      'Inter', 'Segoe UI', Arial, sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text-main); background: var(--white); line-height: 1.65; -webkit-text-size-adjust: 100%; overflow-x: hidden; }

/* ─── Layout ─── */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ─── Navigation ─── */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.nav-logo img { height: 32px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a { color: var(--text-sub); text-decoration: none; font-size: 0.95rem; font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--blue-mid); }
.nav-cta-group { display: flex; align-items: center; gap: 12px; }
.btn-nav-login { color: var(--blue-mid); font-size: 0.9rem; font-weight: 600; text-decoration: none; padding: 6px 14px; border-radius: var(--radius-sm); transition: background .2s; }
.btn-nav-login:hover { background: var(--blue-soft); }
.btn-nav-main {
  background: var(--blue-mid); color: var(--white);
  border: none; cursor: pointer;
  font-size: 0.9rem; font-weight: 700; padding: 9px 20px;
  border-radius: var(--radius-sm); transition: background .2s, transform .15s;
  white-space: nowrap; min-height: 44px;
}
.btn-nav-main:hover { background: var(--blue-dark); transform: translateY(-1px); }
.nav-mobile-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--blue-mid); font-size: 1.4rem; padding: 4px; }

/* ─── Hero ─── */
.hero {
  background: linear-gradient(155deg, #f0f6ff 0%, #ffffff 55%, #e8f2ff 100%);
  padding: 88px 0 72px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -80px; right: -120px;
  width: 560px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(21,101,192,.07) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--blue-soft); color: var(--blue-mid);
  font-size: 0.78rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  padding: 5px 12px; border-radius: 20px; margin-bottom: 22px;
}
.hero-badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--blue-mid); display: inline-block; }
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; line-height: 1.2; color: var(--text-main); margin-bottom: 18px; }
.hero-sub { font-size: 1.1rem; color: var(--text-sub); max-width: 480px; margin-bottom: 36px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn-primary {
  background: var(--blue-mid); color: var(--white);
  border: none; cursor: pointer;
  font-size: 1rem; font-weight: 700; padding: 14px 28px;
  border-radius: var(--radius-md); transition: background .2s, transform .15s, box-shadow .2s;
  min-height: 48px; box-shadow: 0 4px 16px rgba(21,101,192,.3);
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(21,101,192,.4); }
.btn-secondary {
  background: transparent; color: var(--blue-mid);
  border: 2px solid var(--blue-mid); cursor: pointer;
  font-size: 1rem; font-weight: 700; padding: 12px 26px;
  border-radius: var(--radius-md); transition: background .2s, transform .15s;
  min-height: 48px;
}
.btn-secondary:hover { background: var(--blue-soft); transform: translateY(-2px); }
.hero-note { margin-top: 18px; font-size: 0.82rem; color: var(--text-muted); }
.hero-visual { position: relative; }
.hero-mockup {
  background: var(--white); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), 0 0 0 1px var(--border);
  padding: 28px; overflow: hidden;
}
.mockup-header { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; }
.mockup-dots { display: flex; gap: 5px; }
.mockup-dots span { width: 10px; height: 10px; border-radius: 50%; }
.mockup-dots span:nth-child(1) { background: #ff6058; }
.mockup-dots span:nth-child(2) { background: #ffbd2e; }
.mockup-dots span:nth-child(3) { background: #27c940; }
.mockup-title { font-size: 0.78rem; color: var(--text-muted); margin-left: 8px; font-weight: 500; }
.price-row { display: flex; align-items: baseline; gap: 6px; margin-bottom: 6px; }
.price-num { font-size: 2.4rem; font-weight: 800; color: var(--text-main); }
.price-unit { font-size: 0.9rem; color: var(--text-muted); }
.price-change { font-size: 0.85rem; font-weight: 600; color: #16a34a; }
.chart-svg { width: 100%; }
.coin-list { margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.coin-row { display: flex; align-items: center; justify-content: space-between; padding: 8px 10px; border-radius: var(--radius-sm); background: var(--blue-tint); }
.coin-name { font-weight: 700; font-size: 0.88rem; }
.coin-price { font-size: 0.88rem; color: var(--text-sub); }
.coin-chg { font-size: 0.82rem; font-weight: 600; }
.coin-chg.up { color: #16a34a; }
.coin-chg.dn { color: #dc2626; }

/* ─── Trusted logos band ─── */
.trust-band { padding: 40px 0; border-bottom: 1px solid var(--border); }
.trust-label { text-align: center; font-size: 0.82rem; font-weight: 600; color: var(--text-muted); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 24px; }
.trust-logos { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 32px 48px; }
.trust-item { display: flex; align-items: center; gap: 8px; color: var(--text-muted); font-weight: 700; font-size: 0.9rem; }
.trust-item svg { opacity: .55; }

/* ─── Stats bar ─── */
.stats-bar { background: var(--blue-mid); color: var(--white); padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; text-align: center; }
.stat-item { }
.stat-num { font-size: 2rem; font-weight: 800; line-height: 1.1; }
.stat-label { font-size: 0.82rem; opacity: .8; margin-top: 4px; }

/* ─── Feature sections ─── */
.features { padding: 88px 0; }
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; margin-bottom: 96px; }
.feature-block:last-child { margin-bottom: 0; }
.feature-block.reverse .feature-text { order: 2; }
.feature-block.reverse .feature-visual { order: 1; }
.feature-eyebrow { font-size: 0.78rem; font-weight: 700; color: var(--blue-mid); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 14px; }
.feature-block h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; line-height: 1.25; margin-bottom: 16px; }
.feature-block p { color: var(--text-sub); line-height: 1.75; margin-bottom: 20px; }
.feature-list { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.feature-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.95rem; color: var(--text-sub); }
.feature-list li::before { content: ''; width: 18px; height: 18px; border-radius: 50%; background: var(--blue-soft); border: 2px solid var(--blue-mid); flex-shrink: 0; margin-top: 2px; }
.feature-card {
  background: var(--blue-tint); border-radius: var(--radius-lg);
  border: 1px solid var(--border); padding: 32px;
  box-shadow: var(--shadow-sm);
}
.feature-icon-wrap { width: 52px; height: 52px; border-radius: var(--radius-md); background: var(--blue-soft); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.feature-card-title { font-weight: 700; font-size: 1.05rem; margin-bottom: 8px; }
.feature-card-desc { color: var(--text-sub); font-size: 0.9rem; line-height: 1.65; }
.dl-buttons { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.dl-btn {
  display: flex; align-items: center; gap: 8px;
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 18px;
  font-size: 0.88rem; font-weight: 600; color: var(--text-main);
  cursor: pointer; transition: border-color .2s, box-shadow .2s;
  min-height: 44px;
}
.dl-btn:hover { border-color: var(--blue-mid); box-shadow: 0 2px 12px rgba(21,101,192,.12); }
.dl-btn svg { flex-shrink: 0; }
.link-arrow { display: inline-flex; align-items: center; gap: 5px; color: var(--blue-mid); font-weight: 600; font-size: 0.92rem; text-decoration: none; transition: gap .15s; cursor: pointer; }
.link-arrow:hover { gap: 8px; }

/* ─── 3-col card grid ─── */
.cards-section { padding: 72px 0; background: var(--blue-tint); }
.section-header { text-align: center; margin-bottom: 52px; }
.section-label { font-size: 0.78rem; font-weight: 700; color: var(--blue-mid); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 12px; }
.section-header h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; line-height: 1.25; }
.section-header p { color: var(--text-sub); max-width: 560px; margin: 12px auto 0; }
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--white); border-radius: var(--radius-md);
  border: 1px solid var(--border); padding: 28px;
  box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card-icon { width: 44px; height: 44px; border-radius: var(--radius-sm); background: var(--blue-soft); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.card p { color: var(--text-sub); font-size: 0.88rem; line-height: 1.65; }

/* ─── Platform steps ─── */
.steps-section { padding: 88px 0; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.step { position: relative; }
.step-num {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--blue-mid); color: var(--white);
  font-weight: 800; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.step h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.step p { color: var(--text-sub); font-size: 0.9rem; line-height: 1.65; }
.step-connector { position: absolute; top: 20px; left: calc(100% - 8px); width: 40%; height: 2px; background: var(--border); }

/* ─── Testimonials ─── */
.testimonials { padding: 72px 0; background: var(--white); border-top: 1px solid var(--border); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card {
  background: var(--blue-tint); border-radius: var(--radius-md);
  border: 1px solid var(--border); padding: 28px;
}
.stars { color: #f59e0b; font-size: 0.9rem; margin-bottom: 12px; }
.testimonial-text { font-size: 0.92rem; color: var(--text-sub); 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%; background: var(--blue-soft); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.88rem; color: var(--blue-mid); flex-shrink: 0; }
.author-name { font-weight: 700; font-size: 0.88rem; }
.author-loc { font-size: 0.78rem; color: var(--text-muted); }

/* ─── Bottom CTA ─── */
.cta-banner {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-lite) 100%);
  color: var(--white); padding: 80px 24px; text-align: center;
}
.cta-banner h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.cta-banner p { font-size: 1.05rem; opacity: .85; max-width: 520px; margin: 0 auto 36px; }
.cta-banner-btns { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.btn-cta-white {
  background: var(--white); color: var(--blue-mid);
  border: none; cursor: pointer;
  font-size: 1rem; font-weight: 700; padding: 14px 28px;
  border-radius: var(--radius-md); transition: transform .15s, box-shadow .2s;
  min-height: 48px; box-shadow: 0 4px 16px rgba(0,0,0,.18);
}
.btn-cta-white:hover { transform: translateY(-2px); box-shadow: 0 6px 28px rgba(0,0,0,.25); }
.btn-cta-outline {
  background: transparent; color: var(--white);
  border: 2px solid rgba(255,255,255,.6); cursor: pointer;
  font-size: 1rem; font-weight: 700; padding: 12px 26px;
  border-radius: var(--radius-md); transition: background .2s, border-color .2s;
  min-height: 48px;
}
.btn-cta-outline:hover { background: rgba(255,255,255,.12); border-color: var(--white); }

/* ─── Footer ─── */
.site-footer { background: #0a1628; color: rgba(255,255,255,.75); padding: 56px 0 32px; }
.footer-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand { }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; text-decoration: none; }
.footer-logo img { height: 28px; }
.footer-desc { font-size: 0.85rem; line-height: 1.65; max-width: 260px; }
.footer-col h4 { font-size: 0.8rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: rgba(255,255,255,.5); margin-bottom: 14px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col a { color: rgba(255,255,255,.65); text-decoration: none; font-size: 0.88rem; transition: color .2s; }
.footer-col a:hover { color: var(--white); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 24px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-copy { font-size: 0.8rem; }
.footer-legal { font-size: 0.78rem; opacity: .5; }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 56px 0 48px; }
  .hero-visual { display: none; }
  .feature-block { grid-template-columns: 1fr; gap: 32px; }
  .feature-block.reverse .feature-text, .feature-block.reverse .feature-visual { order: unset; }
  .cards-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; gap: 28px; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .nav-mobile-toggle { display: block; }
  .nav-cta-group .btn-nav-login { display: none; }
}
@media (max-width: 480px) {
  .container, .hero-inner, .footer-inner { padding-left: 16px; padding-right: 16px; }
  .hero h1 { font-size: 1.75rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .btn-primary, .btn-secondary, .btn-cta-white, .btn-cta-outline { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; }
  .cta-banner-btns { flex-direction: column; align-items: center; }
  .dl-buttons { flex-direction: column; }
}
@media (max-width: 390px) {
  body { min-width: 320px; }
  .hero h1 { font-size: 1.6rem; overflow-wrap: break-word; word-break: break-word; }
}