/* ==========================================================================
   OKX (欧易) Official Promotion Landing Page Stylesheet
   Domain: walletx3.com | Referral Code: OK6667
   ========================================================================== */

:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #111622;
  --bg-tertiary: #171e2e;
  --bg-card: rgba(22, 28, 43, 0.7);
  --bg-card-hover: rgba(28, 36, 56, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 210, 106, 0.35);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #64748b;
  --text-green: #00d26a;
  --text-gold: #fbbf24;

  --accent-green: #00d26a;
  --accent-green-hover: #00b95c;
  --accent-green-glow: rgba(0, 210, 106, 0.25);
  --accent-gold: #f59e0b;
  --accent-blue: #3b82f6;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 35px rgba(0, 210, 106, 0.2);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --container-max: 1200px;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 210, 106, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 65%, rgba(59, 130, 246, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

img, svg {
  display: block;
  max-width: 100%;
}

button {
  cursor: pointer;
  border: none;
  font-family: inherit;
  background: none;
}

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

/* --------------------------------------------------------------------------
   Top Notification Banner
   -------------------------------------------------------------------------- */
.top-notice-bar {
  background: linear-gradient(90deg, #111a15 0%, #16241b 50%, #111a15 100%);
  border-bottom: 1px solid rgba(0, 210, 106, 0.2);
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  position: relative;
  z-index: 60;
}

.notice-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.notice-badge {
  background: rgba(0, 210, 106, 0.15);
  color: var(--text-green);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.5px;
  border: 1px solid rgba(0, 210, 106, 0.3);
}

.notice-text strong {
  color: #fff;
}

.notice-link {
  color: var(--text-green);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
  margin-left: 6px;
}
.notice-link:hover {
  color: #fff;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(10, 13, 20, 0.82);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo-img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

.brand-info {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 6px;
}

.partner-tag {
  font-size: 10px;
  font-weight: 600;
  background: rgba(0, 210, 106, 0.15);
  color: var(--text-green);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(0, 210, 106, 0.3);
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-sub);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}
.nav-link:hover {
  color: var(--text-green);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-header-ghost {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.04);
}
.btn-header-ghost:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.btn-header-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 700;
  background: var(--accent-green);
  color: #000;
  box-shadow: 0 4px 14px rgba(0, 210, 106, 0.35);
}
.btn-header-primary:hover {
  background: var(--accent-green-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 210, 106, 0.45);
}

.mobile-menu-btn {
  display: none;
  font-size: 24px;
  color: #fff;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 60px 0 50px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.cert-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 210, 106, 0.1);
  border: 1px solid rgba(0, 210, 106, 0.3);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  color: var(--text-green);
  font-size: 12px;
  font-weight: 600;
}

.cert-pill.shield {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
  color: #60a5fa;
}

.hero-title {
  font-size: 46px;
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 18px;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #00d26a 0%, #2bd2ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 30px;
}

/* Invite Code Showcase Box */
.invite-box {
  background: linear-gradient(135deg, rgba(23, 30, 46, 0.9) 0%, rgba(18, 23, 36, 0.95) 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 32px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.invite-box::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 150px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 210, 106, 0.05));
  pointer-events: none;
}

.invite-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.invite-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.rebate-highlight {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-green);
  background: rgba(0, 210, 106, 0.15);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.invite-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.code-display {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 2px;
  color: #fff;
  background: rgba(10, 13, 20, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: all;
}

.code-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.15);
  padding: 3px 8px;
  border-radius: 4px;
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-green);
  color: #000;
  font-weight: 700;
  font-size: 15px;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-copy:hover {
  background: var(--accent-green-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 18px rgba(0, 210, 106, 0.4);
}
.btn-copy.copied {
  background: #10b981;
  color: #fff;
}

.invite-tip {
  font-size: 12px;
  color: var(--text-sub);
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* CTA Buttons */
.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn-primary-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, #00d26a 0%, #00b95c 100%);
  color: #000;
  font-size: 16px;
  font-weight: 800;
  padding: 16px 36px;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 25px rgba(0, 210, 106, 0.35);
  transition: all 0.25s ease;
}
.btn-primary-large:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 210, 106, 0.5);
  filter: brightness(1.05);
}

.btn-secondary-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  padding: 15px 28px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}
.btn-secondary-large:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* Trust Metric Row */
.trust-metric-row {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-num {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
}
.metric-num .accent {
  color: var(--text-green);
}

.metric-lbl {
  font-size: 12px;
  color: var(--text-sub);
}

/* --------------------------------------------------------------------------
   Hero QR Code Poster Card (Right Column)
   -------------------------------------------------------------------------- */
.qr-showcase-card {
  background: linear-gradient(145deg, #131926 0%, #0d121c 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.qr-showcase-card:hover {
  border-color: rgba(0, 210, 106, 0.4);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), var(--shadow-glow);
}

.qr-card-header {
  margin-bottom: 20px;
}

.qr-title {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
}

.qr-subtitle {
  font-size: 13px;
  color: var(--text-green);
  font-weight: 500;
}

.qr-canvas-wrapper {
  background: #ffffff;
  padding: 16px;
  border-radius: 16px;
  display: inline-block;
  margin-bottom: 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  position: relative;
}

.qr-canvas-wrapper img {
  width: 220px;
  height: 220px;
  display: block;
  image-rendering: pixelated;
}

.qr-badge-overlay {
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: #111;
  color: #fff;
  border: 1px solid var(--accent-green);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.qr-card-footer {
  margin-top: 10px;
}

.qr-scan-instruction {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.qr-actions-row {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.btn-qr-action {
  font-size: 12px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-qr-action:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.25);
}

/* --------------------------------------------------------------------------
   Crypto Ticker Tape (Real-time feeling)
   -------------------------------------------------------------------------- */
.ticker-section {
  padding: 14px 0;
  background: rgba(14, 18, 27, 0.7);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.ticker-track {
  display: flex;
  align-items: center;
  gap: 24px;
  animation: tickerScroll 35s linear infinite;
  white-space: nowrap;
  width: max-content;
}

@keyframes tickerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 6px 14px;
  border-radius: 8px;
}

.ticker-symbol {
  font-weight: 700;
  color: #fff;
}

.ticker-price {
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.ticker-change {
  font-size: 11px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
}
.ticker-change.up {
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
}
.ticker-change.down {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.12);
}

/* --------------------------------------------------------------------------
   Section Common Styles
   -------------------------------------------------------------------------- */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-green);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 900;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Rewards / Benefits Section
   -------------------------------------------------------------------------- */
.rewards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.reward-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
}

.reward-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.reward-card.featured {
  border-color: rgba(245, 158, 11, 0.4);
  background: linear-gradient(180deg, rgba(35, 30, 20, 0.7) 0%, rgba(22, 28, 43, 0.8) 100%);
}

.card-top-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.2);
  color: var(--text-gold);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.reward-icon-box {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(0, 210, 106, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-green);
  font-size: 26px;
  margin-bottom: 20px;
}

.reward-card.featured .reward-icon-box {
  background: rgba(245, 158, 11, 0.15);
  color: var(--text-gold);
}

.reward-title {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}

.reward-highlight {
  font-size: 26px;
  font-weight: 900;
  color: var(--text-green);
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

.reward-card.featured .reward-highlight {
  color: var(--text-gold);
}

.reward-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.reward-btn {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-green);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}
.reward-btn:hover {
  gap: 10px;
  color: #fff;
}

/* --------------------------------------------------------------------------
   Step-by-step Registration Guide
   -------------------------------------------------------------------------- */
.steps-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  position: relative;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  position: relative;
  transition: all 0.3s ease;
}

.step-card:hover {
  border-color: rgba(0, 210, 106, 0.3);
  transform: translateY(-4px);
}

.step-number {
  position: absolute;
  top: -16px;
  left: 28px;
  width: 34px;
  height: 34px;
  background: var(--accent-green);
  color: #000;
  font-weight: 900;
  font-size: 16px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 210, 106, 0.35);
}

.step-card-header {
  margin-top: 10px;
  margin-bottom: 16px;
}

.step-title {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
}

.step-body {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.step-list {
  list-style: none;
  margin-top: 14px;
}

.step-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 13px;
}

.step-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--text-green);
  font-weight: 800;
}

.step-highlight-box {
  background: rgba(0, 210, 106, 0.08);
  border: 1px dashed rgba(0, 210, 106, 0.3);
  padding: 10px 14px;
  border-radius: 8px;
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-green);
}

/* --------------------------------------------------------------------------
   Fee Calculator Section
   -------------------------------------------------------------------------- */
.calc-wrapper {
  background: linear-gradient(145deg, #131926 0%, #0d121c 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  box-shadow: var(--shadow-md);
}

.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.input-group-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}

.slider-val-badge {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--text-green);
  font-weight: 700;
}

.calc-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #242e42;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-green);
  cursor: pointer;
  box-shadow: 0 0 12px rgba(0, 210, 106, 0.6);
  border: 2px solid #fff;
}

.trade-type-tabs {
  display: flex;
  gap: 10px;
}

.trade-tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s ease;
}
.trade-tab.active {
  background: rgba(0, 210, 106, 0.15);
  border-color: var(--accent-green);
  color: #fff;
}

.calc-results-card {
  background: rgba(22, 28, 43, 0.85);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.calc-result-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.calc-save-amount {
  font-size: 44px;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--text-green);
  margin-bottom: 6px;
}

.calc-yearly-note {
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 24px;
}

.calc-btn-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --------------------------------------------------------------------------
   Why OKX / Features Section
   -------------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
  background: var(--bg-card-hover);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 18px;
  display: inline-block;
}

.feature-title {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   Download Center
   -------------------------------------------------------------------------- */
.download-box {
  background: linear-gradient(135deg, #121824 0%, #0d121c 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.download-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.download-card:hover {
  border-color: var(--accent-green);
  background: rgba(0, 210, 106, 0.05);
  transform: translateY(-4px);
}

.download-icon {
  font-size: 38px;
  margin-bottom: 14px;
}

.download-platform {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.download-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 18px;
  line-height: 1.5;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all 0.2s ease;
}
.btn-download:hover {
  background: var(--accent-green);
  color: #000;
  border-color: var(--accent-green);
}

/* --------------------------------------------------------------------------
   Anti-Phishing & Security Trust Notice (Crucial for Google Safe Browsing)
   -------------------------------------------------------------------------- */
.security-banner {
  background: linear-gradient(135deg, rgba(16, 24, 38, 0.9) 0%, rgba(13, 19, 31, 0.95) 100%);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-top: 40px;
}

.sec-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.sec-badge {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(59, 130, 246, 0.4);
}

.sec-title {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
}

.sec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 20px;
}

.sec-item {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 18px;
}

.sec-item-title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sec-item-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   FAQ Accordion Section (For Google FAQPage Rich Snippet)
   -------------------------------------------------------------------------- */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.2s ease;
}
.faq-item.active {
  border-color: rgba(0, 210, 106, 0.35);
  background: var(--bg-card-hover);
}

.faq-question {
  width: 100%;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.faq-toggle-icon {
  font-size: 20px;
  color: var(--text-green);
  transition: transform 0.3s ease;
}
.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  padding: 0 26px;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 26px 22px;
}

/* --------------------------------------------------------------------------
   Risk Warning & Disclaimer (Prevents Google Safe Browsing Flags)
   -------------------------------------------------------------------------- */
.disclaimer-section {
  padding: 40px 0;
  background: rgba(10, 13, 20, 0.95);
  border-top: 1px solid var(--border-color);
}

.disclaimer-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.8;
}

.disclaimer-card strong {
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: #07090e;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  color: var(--text-sub);
  font-size: 13px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-desc {
  font-size: 13px;
  line-height: 1.7;
  margin-top: 14px;
  color: var(--text-muted);
}

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-sub);
}
.footer-links a:hover {
  color: var(--text-green);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-cert-tags {
  display: flex;
  gap: 12px;
}

.footer-cert-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* --------------------------------------------------------------------------
   Toast Notification
   -------------------------------------------------------------------------- */
.toast-msg {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(40px);
  opacity: 0;
  pointer-events: none;
  background: rgba(16, 24, 38, 0.95);
  color: #fff;
  border: 1px solid var(--accent-green);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), var(--shadow-glow);
  z-index: 100;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast-msg.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   Mobile Sticky Bottom Action Bar
   -------------------------------------------------------------------------- */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10, 13, 20, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(0, 210, 106, 0.3);
  padding: 10px 16px;
  z-index: 90;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
}

.mobile-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 500px;
  margin: 0 auto;
}

.mobile-code-info {
  display: flex;
  flex-direction: column;
}

.mobile-code-title {
  font-size: 10px;
  color: var(--text-sub);
}

.mobile-code-val {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 800;
  color: var(--text-green);
  display: flex;
  align-items: center;
  gap: 4px;
}

.mobile-btn-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-mobile-copy {
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-mobile-reg {
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 800;
  border-radius: var(--radius-sm);
  background: var(--accent-green);
  color: #000;
  box-shadow: 0 2px 10px rgba(0, 210, 106, 0.4);
}

/* --------------------------------------------------------------------------
   Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .rewards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .calc-wrapper {
    grid-template-columns: 1fr;
  }
  .download-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn-header-ghost {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 32px;
  }
  .steps-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .rewards-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .sec-grid {
    grid-template-columns: 1fr;
  }
  .download-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .mobile-sticky-bar {
    display: block;
  }
  body {
    padding-bottom: 60px;
  }
}