/* ==========================================================================
   欧易 OKX 官方推广与新手指南落地页样式表
   Design System: Obsidian Dark Mode, Cyber Neon Green, Glassmorphism
   Target Domain: bianner.com | Referral Code: OK6667
   ========================================================================== */

:root {
  --bg-main: #090a0c;
  --bg-card: #121418;
  --bg-card-hover: #181c22;
  --bg-glass: rgba(18, 20, 24, 0.85);
  --border-color: #22272f;
  --border-highlight: #2f3642;
  
  --primary: #00ff66;
  --primary-hover: #1aff75;
  --primary-glow: rgba(0, 255, 102, 0.25);
  --primary-bg: rgba(0, 255, 102, 0.1);
  
  --text-main: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-accent: #00ff66;
  
  --warning-bg: rgba(245, 158, 11, 0.1);
  --warning-border: rgba(245, 158, 11, 0.3);
  --warning-text: #fbbf24;
  
  --safe-bg: rgba(16, 185, 129, 0.1);
  --safe-border: rgba(16, 185, 129, 0.3);
  --safe-text: #34d399;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 24px rgba(0, 255, 102, 0.2);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

/* Background ambient light effects */
.bg-glow-top {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 480px;
  background: radial-gradient(circle, rgba(0, 255, 102, 0.08) 0%, rgba(9, 10, 12, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

/* ==========================================================================
   Header & Anti-Phishing Banner
   ========================================================================== */

.security-topbar {
  background: #0f1318;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-secondary);
  padding: 8px 0;
  position: relative;
  z-index: 100;
}

.security-topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.security-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--safe-text);
  font-weight: 500;
}

.security-badge svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.security-tips {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
}

.security-tips span {
  color: var(--text-muted);
}

/* Main Navigation */
.main-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  height: 66px;
  display: flex;
  align-items: center;
}

.main-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  width: 100%;
  gap: 20px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #000;
  padding: 5px;
  border: 1px solid #333;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-icon svg {
  width: 100%;
  height: 100%;
}

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

.brand-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.brand-title .badge-partner {
  font-size: 10px;
  font-weight: 600;
  background: var(--primary-bg);
  color: var(--primary);
  border: 1px solid rgba(0, 255, 102, 0.3);
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 2px;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--primary);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-code-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(0, 255, 102, 0.08);
  border: 1px dashed rgba(0, 255, 102, 0.35);
  border-radius: var(--radius-full);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.header-code-pill:hover {
  background: rgba(0, 255, 102, 0.16);
  border-color: var(--primary);
  color: var(--primary);
}

.header-code-pill strong {
  color: var(--primary);
  font-family: monospace;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  outline: none;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #000000;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 255, 102, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-highlight);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 24px;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  position: relative;
  padding: 60px 0 80px;
  text-align: center;
  z-index: 1;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-highlight);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 24px;
}

.hero-tag .pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border-radius: 50%;
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 255, 102, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 255, 102, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 255, 102, 0); }
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #fff;
}

.hero-title span.gradient-text {
  background: linear-gradient(135deg, #00ff66 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

/* Referral Code Box */
.referral-box {
  max-width: 580px;
  margin: 0 auto 36px;
  background: linear-gradient(180deg, #161a20 0%, #0f1216 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.referral-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.referral-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.referral-header .status-tag {
  color: var(--primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.code-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #08090b;
  border: 1px dashed rgba(0, 255, 102, 0.4);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  margin-bottom: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.code-wrapper:hover {
  border-color: var(--primary);
  background: #0d1116;
}

.code-display {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.code-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.code-text {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--primary);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.code-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-highlight);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.code-copy-btn:hover {
  background: var(--primary);
  color: #000;
  border-color: var(--primary);
}

.referral-perks {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  text-align: left;
  font-size: 13px;
}

.perk-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.perk-item svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
}

.perk-item strong {
  color: #fff;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.hero-actions .btn {
  font-size: 16px;
  padding: 14px 32px;
}

.anti-phishing-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.anti-phishing-note svg {
  color: var(--safe-text);
  width: 16px;
  height: 16px;
}

/* Stats Row */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.stat-card {
  text-align: center;
}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 4px;
}

.stat-value span {
  color: var(--primary);
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

/* ==========================================================================
   Section Common Styles
   ========================================================================== */

section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}

.section-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-bg);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  border: 1px solid rgba(0, 255, 102, 0.2);
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #fff;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Newcomer Benefits & Rebate Comparison Matrix
   ========================================================================== */

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 900px;
  margin: 0 auto 40px;
}

.compare-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  position: relative;
  transition: transform var(--transition-normal);
}

.compare-card.featured {
  border-color: rgba(0, 255, 102, 0.4);
  background: linear-gradient(180deg, rgba(0, 255, 102, 0.04) 0%, #12151a 100%);
  box-shadow: var(--shadow-glow);
}

.compare-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--primary);
  color: #000;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 10px rgba(0, 255, 102, 0.4);
}

.compare-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.compare-header h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.compare-price {
  font-size: 28px;
  font-weight: 800;
}

.compare-card.featured .compare-price {
  color: var(--primary);
}

.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 30px;
}

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.compare-list li svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.compare-list li.active svg {
  color: var(--primary);
}

.compare-list li.inactive svg {
  color: var(--text-muted);
}

.compare-list li strong {
  color: #fff;
}

/* Savings Calculator Card */
.savings-banner {
  background: #111419;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 30px;
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.savings-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.savings-info svg {
  width: 36px;
  height: 36px;
  color: var(--primary);
  flex-shrink: 0;
}

.savings-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.savings-sub {
  font-size: 13px;
  color: var(--text-muted);
}

.savings-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  white-space: nowrap;
}

/* ==========================================================================
   4-Step HowTo Tutorial Section
   ========================================================================== */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  position: relative;
  transition: all var(--transition-normal);
}

.step-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
}

.step-index {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-highlight);
  color: var(--primary);
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}

.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-tip {
  margin-top: 14px;
  padding: 8px 12px;
  background: rgba(0, 255, 102, 0.05);
  border-left: 2px solid var(--primary);
  font-size: 12px;
  color: var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ==========================================================================
   Core Advantages & Security Section
   ========================================================================== */

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  border-color: rgba(0, 255, 102, 0.3);
  transform: translateY(-4px);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--primary-bg);
  border: 1px solid rgba(0, 255, 102, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}

.feature-icon-wrapper svg {
  width: 26px;
  height: 26px;
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   App Download Section
   ========================================================================== */

.download-box {
  background: linear-gradient(135deg, #111419 0%, #161a22 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.download-info h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 16px;
  color: #fff;
}

.download-info p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.7;
}

.download-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.download-btn-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #0b0d10;
  border: 1px solid var(--border-color);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.download-btn-item:hover {
  border-color: var(--primary);
  background: #13171d;
  transform: translateY(-2px);
}

.download-btn-item svg {
  width: 28px;
  height: 28px;
  color: var(--text-main);
  flex-shrink: 0;
}

.download-btn-item .dl-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.download-btn-item .dl-small {
  font-size: 11px;
  color: var(--text-muted);
}

.download-btn-item .dl-bold {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
}

.download-qr-wrapper {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #0a0c0f;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
}

.qr-code-placeholder {
  width: 190px;
  height: 190px;
  background: #ffffff;
  padding: 10px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.qr-code-placeholder img,
.qr-code-placeholder svg {
  width: 100%;
  height: 100%;
  display: block;
}

.qr-tip {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==========================================================================
   FAQ Accordion Section (Rich Snippet Ready)
   ========================================================================== */

.faq-container {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--border-highlight);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-question .faq-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.faq-item.active {
  border-color: rgba(0, 255, 102, 0.3);
}

.faq-item.active .faq-question {
  color: var(--primary);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

.faq-answer-content {
  padding-bottom: 20px;
}

.faq-answer strong {
  color: #fff;
}

/* ==========================================================================
   Pre-Footer Big Banner
   ========================================================================== */

.cta-banner {
  background: radial-gradient(ellipse at bottom, rgba(0, 255, 102, 0.15) 0%, #111419 70%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  margin: 40px auto 0;
  max-width: 1000px;
}

.cta-banner h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.cta-banner p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

/* ==========================================================================
   Anti-Google-Red Security & Transparency Disclaimers
   ========================================================================== */

.compliance-section {
  background: #090b0e;
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.7;
}

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

.compliance-item h4 {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.compliance-item h4 svg {
  width: 14px;
  height: 14px;
  color: var(--safe-text);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.main-footer {
  background: #060708;
  border-top: 1px solid #1a1e24;
  padding: 50px 0 30px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 360px;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-group h5 {
  color: var(--text-main);
  font-size: 14px;
  margin-bottom: 16px;
  font-weight: 700;
}

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

.footer-group a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid #14171d;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Floating Mobile Action Bar
   ========================================================================== */

.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(15, 18, 22, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-highlight);
  padding: 12px 16px;
  z-index: 999;
  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;
}

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

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

.mobile-code-val {
  font-size: 16px;
  font-weight: 800;
  color: var(--primary);
  font-family: monospace;
}

.mobile-actions {
  display: flex;
  gap: 8px;
}

/* Toast Message */
.toast-notice {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: #11151b;
  border: 1px solid var(--primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 25px rgba(0, 255, 102, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 10000;
}

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

.toast-notice svg {
  color: var(--primary);
  width: 18px;
  height: 18px;
}

/* Back to top button */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 30px;
  width: 44px;
  height: 44px;
  background: #171b22;
  border: 1px solid var(--border-highlight);
  color: var(--text-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 80;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary);
  color: #000;
  border-color: var(--primary);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .download-box {
    grid-template-columns: 1fr;
  }
  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .compliance-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .header-cta {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 32px;
  }
  .hero-desc {
    font-size: 15px;
  }
  .comparison-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .download-buttons {
    grid-template-columns: 1fr;
  }
  .savings-banner {
    flex-direction: column;
    text-align: center;
  }
  .mobile-bottom-bar {
    display: block;
  }
  body {
    padding-bottom: 70px;
  }
  .back-to-top {
    bottom: 85px;
  }
  .security-topbar .security-tips {
    display: none;
  }
}

/* ==========================================================================
   E-E-A-T Author & Research Meta Bar
   ========================================================================== */
.meta-badge-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: -10px;
  margin-bottom: 28px;
  font-size: 13px;
  color: var(--text-muted);
}

.meta-badge-bar .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-badge-bar .meta-item svg {
  width: 14px;
  height: 14px;
  color: var(--primary);
}

.meta-divider {
  color: var(--border-color);
}

/* ==========================================================================
   Financial Grade Data Tables (Fee & VIP Matrix)
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 24px 0 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
}

.crypto-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.crypto-table th {
  background: #15181e;
  padding: 14px 18px;
  color: var(--text-secondary);
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.crypto-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  white-space: nowrap;
}

.crypto-table tr:last-child td {
  border-bottom: none;
}

.crypto-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.crypto-table .highlight-col {
  background: rgba(0, 255, 102, 0.04);
  color: var(--primary);
  font-weight: 700;
}

.crypto-table th.highlight-col {
  background: rgba(0, 255, 102, 0.08);
  color: var(--primary);
}

/* ==========================================================================
   Deep Research Content Blocks & Cards
   ========================================================================== */
.deep-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 30px;
}

.deep-card h3 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.deep-card h3 svg {
  color: var(--primary);
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.deep-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 18px;
}

.deep-card p:last-child {
  margin-bottom: 0;
}

/* Anti-Phishing Safety Education Box */
.security-notice-box {
  background: linear-gradient(135deg, rgba(0, 255, 102, 0.06) 0%, rgba(14, 17, 21, 0.95) 100%);
  border: 1px solid rgba(0, 255, 102, 0.3);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 30px 0;
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.security-notice-box.warning {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, rgba(14, 17, 21, 0.95) 100%);
  border-color: rgba(245, 158, 11, 0.35);
}

.security-notice-box .sec-icon {
  width: 28px;
  height: 28px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.security-notice-box.warning .sec-icon {
  color: var(--warning-text);
}

.sec-body h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.sec-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Regulatory Badges Grid */
.license-badge-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.license-card {
  background: #0d0f13;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: center;
}

.license-flag {
  font-size: 22px;
  margin-bottom: 6px;
}

.license-name {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 2px;
}

.license-desc {
  font-size: 11px;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .license-badge-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}