/* ===================================================================
   OKX 官方推广特惠导航页 - 样式表
   主题：暗黑科技感、OKX 经典荧光绿黑金、极简微动效、极致加载速度
=================================================================== */

:root {
  --bg-primary: #08090c;
  --bg-secondary: #0f1117;
  --bg-card: rgba(18, 22, 31, 0.75);
  --bg-card-hover: rgba(26, 32, 46, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 255, 163, 0.35);
  
  --okx-green: #00ffa3;
  --okx-green-hover: #00df8e;
  --okx-green-glow: rgba(0, 255, 163, 0.25);
  
  --okx-blue: #2952e3;
  --okx-purple: #7928ca;
  --text-white: #ffffff;
  --text-light: #f1f5f9;
  --text-muted: #94a3b8;
  --text-sub: #64748b;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --shadow-glow: 0 0 25px rgba(0, 255, 163, 0.2);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 50% -10%, rgba(0, 255, 163, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 90% 25%, rgba(41, 82, 227, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 10% 70%, rgba(121, 40, 202, 0.06) 0%, transparent 35%);
  background-attachment: fixed;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Top Announcement Bar */
.top-notice-bar {
  background: linear-gradient(90deg, rgba(0, 255, 163, 0.12), rgba(41, 82, 227, 0.15));
  border-bottom: 1px solid rgba(0, 255, 163, 0.2);
  color: var(--text-white);
  padding: 8px 16px;
  font-size: 0.875rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.notice-tag {
  background: var(--okx-green);
  color: #000;
  font-weight: 700;
  font-size: 0.725rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.top-notice-bar strong {
  color: var(--okx-green);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 9, 12, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-badge {
  font-size: 0.65rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--okx-green);
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  padding: 4px 6px;
  border-radius: var(--radius-full);
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.08);
}

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

.mobile-menu-btn {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-white);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.mobile-menu-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--okx-green);
  border-color: var(--okx-green);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.925rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.825rem;
  font-weight: 600;
}

.btn-primary {
  background: var(--okx-green);
  color: #000000;
  box-shadow: 0 4px 18px var(--okx-green-glow);
}

.btn-primary:hover {
  background: var(--okx-green-hover);
  box-shadow: 0 6px 24px rgba(0, 255, 163, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-white);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--okx-green);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
  font-weight: 700;
}

/* Hero Section */
.hero-section {
  padding: 70px 0 50px;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 255, 163, 0.08);
  border: 1px solid rgba(0, 255, 163, 0.25);
  color: var(--okx-green);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.hero-pill-pulse {
  width: 8px;
  height: 8px;
  background: var(--okx-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--okx-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1.15;
  color: var(--text-white);
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, var(--okx-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 36px;
}

/* Hero Code Box (Conversion Core) */
.hero-code-card {
  max-width: 660px;
  margin: 0 auto 40px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  box-shadow: var(--shadow-glow), var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.hero-code-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--okx-green), transparent);
}

.code-header-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.code-tag-title {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.code-benefit-badge {
  background: rgba(0, 255, 163, 0.15);
  color: var(--okx-green);
  border: 1px solid rgba(0, 255, 163, 0.3);
  font-size: 0.775rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.code-display-box {
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.code-value-wrap {
  text-align: left;
}

.code-label {
  font-size: 0.75rem;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.code-value {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 800;
  color: var(--okx-green);
  letter-spacing: 2px;
  line-height: 1.1;
  text-shadow: 0 0 16px rgba(0, 255, 163, 0.4);
}

.code-actions {
  display: flex;
  gap: 10px;
}

.btn-copy {
  background: #ffffff;
  color: #000000;
  font-weight: 700;
  border: none;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  font-size: 0.95rem;
}

.btn-copy:hover {
  background: var(--okx-green);
  box-shadow: 0 0 15px rgba(0, 255, 163, 0.4);
}

.btn-copy.copied {
  background: var(--okx-green);
  color: #000000;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-register-btn {
  width: 100%;
  padding: 16px;
  font-size: 1.125rem;
  font-weight: 700;
}

.code-footnote {
  font-size: 0.775rem;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footnote-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.footnote-item svg {
  color: var(--okx-green);
}

/* Trust Metric Badges */
.trust-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  max-width: 980px;
  margin: 0 auto;
}

.trust-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 14px;
}

.trust-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--okx-green);
  flex-shrink: 0;
}

.trust-num {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.2;
}

.trust-desc {
  font-size: 0.775rem;
  color: var(--text-muted);
}

/* Ticker Section */
.ticker-section {
  padding: 30px 0 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--okx-green);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 620px;
  margin: 0 auto;
}

.ticker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.ticker-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  transition: var(--transition);
}

.ticker-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.2);
  background: var(--bg-card-hover);
}

.ticker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.coin-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.coin-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.75rem;
}

.coin-icon.btc { background: #f7931a; color: #fff; }
.coin-icon.eth { background: #627eea; color: #fff; }
.coin-icon.sol { background: #14f195; color: #000; }
.coin-icon.okb { background: #000; border: 1px solid #fff; color: #fff; }

.coin-symbol {
  font-weight: 700;
  color: var(--text-white);
  font-size: 1rem;
}

.coin-name {
  font-size: 0.75rem;
  color: var(--text-sub);
}

.coin-change {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
}

.coin-change.up {
  background: rgba(0, 255, 163, 0.12);
  color: var(--okx-green);
}

.coin-price {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-white);
}

.coin-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 12px;
  font-size: 0.775rem;
  color: var(--text-sub);
}

.coin-link {
  color: var(--okx-green);
  text-decoration: none;
  font-weight: 600;
}

/* Benefits Section */
.benefits-section {
  padding: 60px 0;
  position: relative;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}

.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.benefit-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
}

.benefit-card:hover::after {
  background: var(--okx-green);
}

.benefit-badge-num {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.07);
}

.benefit-icon-wrap {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(0, 255, 163, 0.1);
  border: 1px solid rgba(0, 255, 163, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--okx-green);
  margin-bottom: 22px;
}

.benefit-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}

.benefit-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.benefit-highlight {
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.825rem;
  color: var(--okx-green);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Steps Tutorial Section */
.tutorial-section {
  padding: 70px 0;
  background: rgba(15, 17, 23, 0.4);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  position: relative;
}

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

.step-card:hover {
  border-color: rgba(0, 255, 163, 0.3);
  transform: translateY(-4px);
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--okx-green), var(--okx-blue));
  color: #000;
  font-weight: 900;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

.step-content {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.step-tip {
  font-size: 0.8rem;
  color: var(--okx-green);
  background: rgba(0, 255, 163, 0.08);
  border-radius: 6px;
  padding: 8px 12px;
}

/* Security & Advantage Section */
.advantage-section {
  padding: 70px 0;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.advantage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.advantage-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.advantage-title svg {
  color: var(--okx-green);
}

.advantage-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* App Download & Anti-phishing */
.download-section {
  padding: 70px 0;
  background: linear-gradient(180deg, transparent, rgba(0, 255, 163, 0.04) 50%, transparent);
}

.download-box {
  background: var(--bg-card);
  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: 1.8rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 14px;
}

.download-info p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
  line-height: 1.6;
}

.download-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 24px;
}

.anti-phishing-tips {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 0.825rem;
  color: var(--text-muted);
}

.anti-phishing-tips strong {
  color: var(--okx-green);
}

.download-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
}

.qr-code-card {
  width: 190px;
  height: 190px;
  background: #ffffff;
  border-radius: 14px;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 255, 163, 0.2);
  transition: var(--transition);
}

.qr-code-card:hover {
  transform: scale(1.03);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 255, 163, 0.4);
}

.qr-link-wrapper {
  display: block;
  width: 100%;
  height: 100%;
}

.qr-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.qr-label {
  font-size: 0.9rem;
  color: var(--text-white);
  font-weight: 700;
  margin-bottom: 4px;
}

.qr-sub-tip {
  font-size: 0.775rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.qr-sub-tip strong {
  color: var(--okx-green);
  font-family: var(--font-mono);
}

.qr-direct-btn {
  padding: 8px 18px;
  font-size: 0.825rem;
  width: auto;
}

/* FAQ Accordion Section */
.faq-section {
  padding: 70px 0;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 20px 24px;
  color: var(--text-white);
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--okx-green);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 600px;
  padding: 0 24px 22px;
  transition: max-height 0.4s ease-in-out, padding 0.3s ease;
}

/* Bottom CTA Strip */
.bottom-cta-section {
  padding: 60px 0;
  text-align: center;
}

.bottom-cta-card {
  background: linear-gradient(135deg, rgba(18, 22, 31, 0.95), rgba(8, 9, 12, 0.98));
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 50px 30px;
  box-shadow: var(--shadow-glow);
}

.bottom-cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 14px;
}

.bottom-cta-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Site Footer */
.site-footer {
  background: #050608;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 50px 0 100px; /* bottom padding for mobile sticky bar */
  font-size: 0.85rem;
  color: var(--text-sub);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 30px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 400px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-white);
  font-weight: 800;
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.footer-desc {
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-links-group {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-col h4 {
  color: var(--text-white);
  font-size: 0.9rem;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--okx-green);
}

/* Safe Compliance / Disclaimer Box */
.compliance-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
  font-size: 0.775rem;
  line-height: 1.7;
  color: #717d96;
}

.compliance-box h5 {
  color: var(--text-muted);
  font-size: 0.825rem;
  margin-bottom: 8px;
  font-weight: 700;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 20px;
  font-size: 0.775rem;
  color: #4a5568;
}

/* Mobile Bottom Sticky Bar */
.mobile-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(10, 12, 16, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid var(--border-highlight);
  padding: 12px 20px;
  display: none; /* Shown on small screens */
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.7);
}

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

.sticky-label {
  font-size: 0.675rem;
  color: var(--text-sub);
}

.sticky-code {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--okx-green);
  letter-spacing: 1px;
}

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

.sticky-actions .btn {
  padding: 8px 14px;
  font-size: 0.85rem;
}

/* Toast Notification */
.toast-notice {
  position: fixed;
  top: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  background: #ffffff;
  color: #000000;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 255, 163, 0.6);
  z-index: 10000;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

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

.toast-icon {
  width: 20px;
  height: 20px;
  background: var(--okx-green);
  color: #000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive Media Queries */
@media (max-width: 960px) {
  .mobile-menu-btn {
    display: inline-flex;
  }

  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(8, 9, 12, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    border-radius: 0;
    padding: 16px 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    display: none;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
    z-index: 99;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    text-align: left;
    border-radius: var(--radius-sm);
  }

  .download-box {
    grid-template-columns: 1fr;
    padding: 30px 24px;
  }
  
  .download-visual {
    order: -1;
  }
}

@media (max-width: 768px) {
  .mobile-sticky-bar {
    display: flex;
  }
  
  .site-header .btn-primary {
    display: none;
  }
  
  .hero-section {
    padding: 40px 0 30px;
  }
  
  .hero-code-card {
    padding: 20px 16px;
  }
  
  .code-display-box {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .code-actions {
    width: 100%;
  }
  
  .btn-copy {
    width: 100%;
    justify-content: center;
  }
  
  .footer-top {
    flex-direction: column;
  }
}

/* ===================================================================
   新增厚重内容模块样式 (对比表格、费率精算、5大实操指南、防诈白皮书)
=================================================================== */

/* 1. 独立门户与防仿冒免责声明横幅 */
.portal-disclaimer-banner {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid rgba(56, 189, 248, 0.25);
  padding: 10px 20px;
  font-size: 0.8rem;
  color: #94a3b8;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  line-height: 1.5;
  text-align: center;
}

.portal-disclaimer-banner strong {
  color: #38bdf8;
}

.portal-disclaimer-tag {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

/* 2. 响应式对比表格与数据卡片 */
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 30px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
  min-width: 780px;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-white);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.comparison-table tr.highlight-row {
  background: rgba(0, 255, 163, 0.05);
}

.comparison-table tr.highlight-row td {
  border-top: 1px solid rgba(0, 255, 163, 0.25);
  border-bottom: 1px solid rgba(0, 255, 163, 0.25);
  color: var(--text-white);
  font-weight: 600;
}

.platform-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.badge-top-pick {
  background: var(--okx-green);
  color: #000;
  font-size: 0.675rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
}

.status-check {
  color: var(--okx-green);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 3. 费率阶梯表与精算卡片 */
.fee-calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 30px 0;
}

@media (max-width: 900px) {
  .fee-calc-grid {
    grid-template-columns: 1fr;
  }
}

.fee-tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.fee-tier-card h3 {
  font-size: 1.25rem;
  color: var(--text-white);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.calc-summary-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 20px;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.9rem;
}

.calc-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.calc-val-savings {
  color: var(--okx-green);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.15rem;
}

/* 4. 深度实战指南手册 (5大章节) */
.guide-chapters-section {
  padding: 70px 0;
  background: rgba(10, 13, 18, 0.6);
}

.chapter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  margin-bottom: 30px;
  transition: var(--transition);
}

.chapter-card:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.chapter-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.chapter-badge {
  background: linear-gradient(135deg, rgba(0, 255, 163, 0.2), rgba(41, 82, 227, 0.25));
  color: var(--okx-green);
  border: 1px solid rgba(0, 255, 163, 0.4);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.chapter-title-group h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.3;
  margin-bottom: 6px;
}

.chapter-title-group .chapter-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.chapter-body {
  color: #cbd5e1;
  font-size: 0.95rem;
  line-height: 1.8;
}

.chapter-body p {
  margin-bottom: 16px;
}

.guide-step-list {
  list-style: none;
  counter-reset: guide-counter;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.guide-step-list li {
  position: relative;
  padding-left: 38px;
  line-height: 1.7;
}

.guide-step-list li::before {
  content: counter(guide-counter);
  counter-increment: guide-counter;
  position: absolute;
  left: 0;
  top: 2px;
  width: 24px;
  height: 24px;
  background: rgba(0, 255, 163, 0.15);
  color: var(--okx-green);
  border: 1px solid rgba(0, 255, 163, 0.35);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
}

.callout-box {
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 20px 0;
  font-size: 0.885rem;
  line-height: 1.7;
}

.callout-box.tip {
  background: rgba(0, 255, 163, 0.06);
  border-left: 4px solid var(--okx-green);
  color: #e2e8f0;
}

.callout-box.warning {
  background: rgba(245, 158, 11, 0.08);
  border-left: 4px solid #f59e0b;
  color: #fde68a;
}

.callout-box.security {
  background: rgba(239, 68, 68, 0.08);
  border-left: 4px solid #ef4444;
  color: #fecaca;
}

.callout-box strong {
  color: #ffffff;
}

/* 5. 防诈骗与安全白皮书模块 */
.scam-defense-section {
  padding: 70px 0;
}

.scam-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.scam-card {
  background: var(--bg-card);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  transition: var(--transition);
}

.scam-card:hover {
  border-color: rgba(239, 68, 68, 0.45);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
}

.scam-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.scam-icon-danger {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.scam-card-header h4 {
  font-size: 1.05rem;
  color: var(--text-white);
  font-weight: 700;
}

.scam-detail {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.scam-solution {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 0.8rem;
  color: var(--okx-green);
  line-height: 1.5;
}

/* 6. 透明度、编辑准则与 E-E-A-T 模块 */
.transparency-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 30px;
}

.transparency-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
}

.transparency-card h4 {
  font-size: 1.1rem;
  color: var(--text-white);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.transparency-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
}