/* ============================================================
   ATiger Exchange — Landing Page Styles
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary:       #f5a623;
  --primary-dark:  #d4891a;
  --primary-glow:  rgba(245,166,35,.25);
  --accent:        #ff6b35;
  --bg:            #0a0e1a;
  --bg-section:    #0e1220;
  --bg-card:       #131929;
  --bg-card-hover: #1a2235;
  --border:        rgba(255,255,255,.07);
  --border-light:  rgba(255,255,255,.12);
  --text:          #e8ecf0;
  --text-muted:    #8a94a6;
  --text-dim:      #5a6478;
  --up:            #22c55e;
  --down:          #ef4444;
  --radius-sm:     8px;
  --radius:        14px;
  --radius-lg:     20px;
  --shadow:        0 4px 24px rgba(0,0,0,.45);
  --shadow-card:   0 8px 40px rgba(0,0,0,.55);
  --transition:    .22s cubic-bezier(.4,0,.2,1);
  --max-w:         1200px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

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

.section {
  padding: 96px 0;
}

/* ---------- Typography Helpers ---------- */
.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 16px;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 4px 18px var(--primary-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(245,166,35,.4);
  filter: brightness(1.08);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary-glow);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,.07);
  color: var(--text);
  border: 1.5px solid var(--border-light);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.12);
  transform: translateY(-2px);
}

.btn-lg  { padding: 15px 32px; font-size: 1rem; border-radius: var(--radius); }
.btn-sm  { padding: 6px 16px; font-size: .8rem; }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  background: rgba(10,14,26,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.nav {
  display: flex;
  align-items: center;
  height: 68px;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.logo-icon { font-size: 1.4rem; }
.logo-text strong { color: var(--primary); }

.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover {
  color: #fff;
  background: rgba(255,255,255,.06);
}

.nav-cta {
  display: flex;
  gap: 10px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-top: 140px;
  padding-bottom: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(245,166,35,.12) 0%, transparent 70%),
              var(--bg);
  overflow: hidden;
  position: relative;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 64px;
  align-items: center;
  padding-bottom: 80px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245,166,35,.12);
  border: 1px solid rgba(245,166,35,.3);
  color: var(--primary);
  font-size: .8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.hero-text h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  color: #fff;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  row-gap: 16px;
  padding: 24px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat { text-align: center; flex: 1; min-width: 80px; }
.stat strong { display: block; font-size: 1.4rem; font-weight: 800; color: #fff; }
.stat span   { font-size: .75rem; color: var(--text-muted); }

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

/* Price Card */
.hero-visual { position: relative; }

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 8px;
  box-shadow: var(--shadow-card), 0 0 0 1px rgba(245,166,35,.05);
  animation: floatCard 6s ease-in-out infinite;
}

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

.ticker-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  cursor: default;
}
.ticker-row:hover { background: rgba(255,255,255,.04); }
.ticker-row img   { border-radius: 50%; flex-shrink: 0; }

.ticker-row > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.coin-name   { font-size: .9rem; font-weight: 600; color: #fff; }
.coin-change { font-size: .75rem; font-weight: 500; }
.coin-change.up   { color: var(--up); }
.coin-change.down { color: var(--down); }
.coin-price  { font-size: .95rem; font-weight: 700; color: #fff; white-space: nowrap; }

.card-cta {
  display: block;
  margin: 8px;
  padding: 12px;
  text-align: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: .88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: filter var(--transition);
}
.card-cta:hover { filter: brightness(1.1); }

/* Wave */
.hero-wave { line-height: 0; }
.hero-wave svg { width: 100%; height: 80px; }

/* ============================================================
   TRUST BAR
   ============================================================ */
.trust-bar {
  background: var(--bg-section);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.trust-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 32px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}
.trust-icon { font-size: 1.1rem; }

/* ============================================================
   FEATURES
   ============================================================ */
.features { background: var(--bg); }

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-card);
}
.feature-card:hover::before { opacity: 1; }

.feature-card--highlight {
  background: linear-gradient(135deg, rgba(245,166,35,.08) 0%, rgba(255,107,53,.06) 100%);
  border-color: rgba(245,166,35,.2);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ============================================================
   MARKETS
   ============================================================ */
.markets { background: var(--bg-section); }

.market-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.market-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}

.market-table thead {
  background: rgba(255,255,255,.03);
  border-bottom: 1px solid var(--border);
}

.market-table th {
  padding: 14px 20px;
  text-align: left;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.market-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.market-table tbody tr:last-child { border-bottom: none; }
.market-table tbody tr:hover { background: rgba(255,255,255,.03); }

.market-table td {
  padding: 16px 20px;
  color: var(--text-muted);
}

.asset-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: #fff;
}
.asset-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.asset-dot.btc { background: #f7931a; }
.asset-dot.eth { background: #627eea; }
.asset-dot.sol { background: #00c2ff; }
.asset-dot.xrp { background: #346aa9; }
.asset-dot.bnb { background: #f3ba2f; }

.price { font-weight: 600; color: #fff; }

.change {
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: .82rem;
}
.change.up   { color: var(--up);   background: rgba(34,197,94,.12); }
.change.down { color: var(--down); background: rgba(239,68,68,.12); }

.markets-cta { text-align: center; margin-top: 36px; }

/* ============================================================
   SECURITY
   ============================================================ */
.security { background: var(--bg); }

.security-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.security-text .section-label { margin-bottom: 12px; }

.security-text h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.25;
}

.security-text > p {
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.7;
}

.security-list {
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.security-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: .95rem;
}
.check {
  color: var(--up);
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* Security Badge */
.security-badge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.security-badge {
  position: relative;
  width: 180px; height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.badge-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--primary);
  animation: pulseBadge 3s ease-in-out infinite;
}

@keyframes pulseBadge {
  0%,100% { transform: scale(1);   opacity: 1;   box-shadow: 0 0 0 0 var(--primary-glow); }
  50%      { transform: scale(1.05); opacity: .8; box-shadow: 0 0 0 16px transparent; }
}

.badge-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  width: 150px; height: 150px;
  justify-content: center;
}

.badge-icon { font-size: 2.2rem; }
.badge-inner strong { color: #fff; font-size: 1rem; }
.badge-inner span   { color: var(--text-muted); font-size: .78rem; }

.badge-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  font-size: .88rem;
  color: var(--text-muted);
  text-align: center;
  width: 100%;
}
.badge-stat strong { color: #fff; }

/* ============================================================
   FEES
   ============================================================ */
.fees { background: var(--bg-section); }

.fees-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: start;
}

.fee-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}
.fee-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.fee-card--popular {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px rgba(245,166,35,.2), var(--shadow-card);
  transform: scale(1.03);
}
.fee-card--popular:hover { transform: scale(1.03) translateY(-6px); }

.popular-badge {
  position: absolute;
  top: -14px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 100px;
  white-space: nowrap;
}

.fee-tier {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.fee-rate {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.fee-rate span { color: #fff; }
.fee-rate.maker { font-size: 1.4rem; margin-bottom: 24px; }

.fee-perks {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
  text-align: left;
}
.fee-perks li { font-size: .88rem; color: var(--text-muted); }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials { background: var(--bg); }

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.stars {
  color: var(--primary);
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.review-card p {
  font-size: .92rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.review-card footer {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.review-card footer strong { color: #fff; font-size: .9rem; }
.review-card footer span   { color: var(--text-dim); font-size: .8rem; }

/* ============================================================
   FAQ
   ============================================================ */
.faq { background: var(--bg-section); }

.faq-inner { max-width: 740px; margin: 0 auto; }
.faq-inner .section-header { max-width: 100%; }

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:has(.faq-q[aria-expanded="true"]) {
  border-color: rgba(245,166,35,.3);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text);
  font-size: .96rem;
  font-weight: 600;
  text-align: left;
  transition: color var(--transition);
}
.faq-q:hover { color: #fff; }
.faq-q[aria-expanded="true"] { color: var(--primary); }

.faq-icon {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--text-dim);
  flex-shrink: 0;
  transition: transform var(--transition), color var(--transition);
  line-height: 1;
}
.faq-q[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s cubic-bezier(.4,0,.2,1), padding .35s;
}
.faq-a:not([hidden]) {
  padding: 0 24px 20px;
  max-height: 400px;
}
.faq-a p {
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.7;
}

/* ============================================================
   CTA / REGISTER
   ============================================================ */
.cta-section {
  background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(245,166,35,.1) 0%, transparent 70%),
              var(--bg);
}

.cta-inner {
  text-align: center;
  max-width: 580px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-inner > p {
  color: var(--text-muted);
  margin-bottom: 36px;
  font-size: 1.05rem;
}

.register-form {
  display: flex;
  gap: 10px;
  max-width: 480px;
  margin: 0 auto 16px;
}

.register-form input[type="email"] {
  flex: 1;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .95rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}
.register-form input[type="email"]::placeholder { color: var(--text-dim); }
.register-form input[type="email"]:focus { border-color: var(--primary); }
.register-form input[type="email"].error { border-color: var(--down); }

.cta-note {
  font-size: .78rem;
  color: var(--text-dim);
}
.cta-note a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.cta-note a:hover { color: var(--primary); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-section);
  border-top: 1px solid var(--border);
  padding-top: 64px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}

.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.footer-col h3 {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: .86rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col a:hover { color: #fff; }

.footer-bottom {
  padding: 20px 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: .78rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 18px var(--primary-glow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 90;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover { transform: translateY(-3px); }

/* ============================================================
   TOAST NOTIFICATION
   ============================================================ */
.toast {
  position: fixed;
  bottom: 32px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text);
  padding: 14px 24px;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 500;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s, transform .3s;
  z-index: 200;
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast.success { border-color: rgba(34,197,94,.35); }
.toast.error   { border-color: rgba(239,68,68,.35); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner      { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual     { display: none; }
  .security-inner  { grid-template-columns: 1fr; gap: 48px; }
  .security-visual { display: none; }
  .footer-inner    { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 860px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid  { grid-template-columns: repeat(2, 1fr); }
  .fees-grid     { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
  .fee-card--popular { transform: none; }
  .fee-card--popular:hover { transform: translateY(-6px); }
  .footer-links  { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .section { padding: 64px 0; }

  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(10,14,26,.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    gap: 4px;
  }
  .nav-links.open + .nav-cta {
    display: flex;
    position: fixed;
    top: calc(68px + 160px);
    left: 24px; right: 24px;
    z-index: 99;
    flex-direction: column;
  }
  .nav-links a {
    padding: 12px 14px;
    font-size: .95rem;
    color: var(--text);
  }

  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 100%; height: 1px; }

  .features-grid { grid-template-columns: 1fr; }
  .reviews-grid  { grid-template-columns: 1fr; }
  .footer-links  { grid-template-columns: 1fr 1fr; }

  .register-form { flex-direction: column; }

  .back-to-top { bottom: 20px; right: 20px; }
}