/* ==========================================================================
   极速三方车队 (APEX FLEET) - 现代化专业设计系统与样式表
   ========================================================================== */

/* 1. Design Tokens & CSS Variables */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Color Palette - Dark Luxury Cyber Slate */
  --bg-dark-900: #070a12;
  --bg-dark-800: #0b101d;
  --bg-dark-700: #111827;
  --bg-card: rgba(17, 24, 39, 0.72);
  --bg-card-hover: rgba(26, 36, 58, 0.85);
  --bg-glass: rgba(15, 23, 42, 0.85);
  
  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.15);
  --border-focus: rgba(36, 161, 222, 0.5);

  /* Accents */
  --tg-blue: #24A1DE;
  --tg-blue-hover: #1b8ec5;
  --tg-blue-glow: rgba(36, 161, 222, 0.25);
  
  --emerald: #10B981;
  --emerald-glow: rgba(16, 185, 129, 0.2);
  
  --cyan: #06B6D4;
  --cyan-glow: rgba(6, 182, 212, 0.2);

  --purple: #8B5CF6;
  --purple-glow: rgba(139, 92, 246, 0.2);

  /* Text Colors */
  --text-main: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverse: #090D16;

  /* Radius & Shadows */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.6);
  --shadow-glow-tg: 0 8px 30px rgba(36, 161, 222, 0.35);

  /* Transitions */
  --transition-fast: 0.18s ease;
  --transition-normal: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 2. Global Resets & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-dark-900);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #131c33 0%, #070a12 55%, #05070d 100%);
}

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

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

/* 3. Utility Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section-padding {
  padding: 90px 0;
  position: relative;
}

.section-darker {
  background-color: rgba(7, 10, 18, 0.5);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(6, 182, 212, 0.1);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #FFFFFF;
  margin-bottom: 14px;
  line-height: 1.3;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.accent-text {
  color: var(--tg-blue);
}

.accent-cyan {
  color: var(--cyan);
}

.accent-emerald {
  color: var(--emerald);
}

/* 4. Top Announcement Bar */
.announcement-bar {
  background: linear-gradient(90deg, #091326 0%, #0d1e3d 50%, #091326 100%);
  border-bottom: 1px solid rgba(36, 161, 222, 0.2);
  padding: 8px 0;
  font-size: 0.85rem;
  position: sticky;
  top: 0;
  z-index: 1001;
}

.announcement-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.announcement-left {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #E2E8F0;
}

.pulse-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--emerald);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.announcement-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tg-tip {
  color: var(--text-secondary);
}

.tg-tip strong {
  color: #38BDF8;
}

.btn-copy-mini {
  background: rgba(56, 189, 248, 0.15);
  color: #38BDF8;
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  transition: all var(--transition-fast);
}

.btn-copy-mini:hover {
  background: #38BDF8;
  color: #0F172A;
}

/* 5. Header / Navigation */
.site-header {
  position: sticky;
  top: 37px;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

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

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

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
}

.logo-icon svg {
  width: 22px;
  height: 22px;
}

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

.logo-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #FFFFFF;
  line-height: 1.2;
}

.logo-sub {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover {
  color: #FFFFFF;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--tg-blue);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.mobile-toggle span {
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* 6. Buttons & Interactive Controls */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  transition: all var(--transition-normal);
  text-decoration: none;
  user-select: none;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.btn-telegram {
  background: linear-gradient(135deg, #24A1DE 0%, #0088cc 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(36, 161, 222, 0.35);
}

.btn-telegram:hover {
  background: linear-gradient(135deg, #2eb3f5 0%, #0099e6 100%);
  box-shadow: 0 6px 24px rgba(36, 161, 222, 0.55);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-primary {
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 18px rgba(16, 185, 129, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #14c78c 0%, #08a374 100%);
  box-shadow: 0 6px 26px rgba(16, 185, 129, 0.55);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.07);
  color: #E2E8F0;
  border: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-light);
  color: #CBD5E1;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.btn-copy:hover {
  background: rgba(36, 161, 222, 0.2);
  color: #38BDF8;
  border-color: var(--tg-blue);
}

.icon-tg {
  width: 20px;
  height: 20px;
}

.icon-svg {
  width: 18px;
  height: 18px;
}

.icon-copy {
  width: 16px;
  height: 16px;
}

.icon-sm {
  width: 16px;
  height: 16px;
}

/* 7. Hero Section */
.hero-section {
  padding: 80px 0 60px 0;
  position: relative;
  text-align: center;
  overflow: hidden;
}

.hero-bg-glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 680px;
  height: 480px;
  background: radial-gradient(circle, rgba(36, 161, 222, 0.15) 0%, rgba(16, 185, 129, 0.08) 45%, transparent 70%);
  filter: blur(50px);
  pointer-events: none;
  z-index: 0;
}

.hero-container {
  position: relative;
  z-index: 1;
  max-width: 960px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  color: #34D399;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.03em;
  color: #FFFFFF;
  margin-bottom: 20px;
}

.gradient-headline {
  color: #38BDF8;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto 36px auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* Quick TG Bar */
.hero-tg-quickbar {
  margin: 0 auto 50px auto;
  max-width: 620px;
}

.quickbar-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(36, 161, 222, 0.35);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  gap: 10px;
}

.quickbar-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.quickbar-code {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: #38BDF8;
  letter-spacing: 0.04em;
}

.quickbar-tip {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Hero Stats Grid */
.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 22px 14px;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.1;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.stat-plus, .stat-unit {
  color: var(--emerald);
  font-size: 1.5rem;
  font-weight: 700;
  margin-left: 2px;
}

.stat-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* 8. Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px 26px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}

.service-card.featured {
  border-color: rgba(6, 182, 212, 0.4);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.95) 0%, rgba(13, 29, 48, 0.8) 100%);
  box-shadow: 0 10px 30px rgba(6, 182, 212, 0.15);
}

.featured-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  background: linear-gradient(135deg, #06B6D4 0%, #0284C7 100%);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.service-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.service-icon-wrap svg {
  width: 26px;
  height: 26px;
}

.icon-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.icon-cyan {
  background: rgba(6, 182, 212, 0.15);
  color: #38BDF8;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.icon-blue {
  background: rgba(36, 161, 222, 0.15);
  color: #60A5FA;
  border: 1px solid rgba(36, 161, 222, 0.3);
}

.icon-purple {
  background: rgba(139, 92, 246, 0.15);
  color: #A78BFA;
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.service-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.service-features {
  list-style: none;
  margin-bottom: 24px;
}

.service-features li {
  font-size: 0.85rem;
  color: #CBD5E1;
  margin-bottom: 8px;
}

.service-cta {
  font-size: 0.9rem;
  font-weight: 600;
  color: #38BDF8;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.service-cta:hover {
  color: #7DD3FC;
  transform: translateX(4px);
}

/* 9. Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

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

.adv-card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.adv-badge-num {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
}

.adv-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.adv-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
}

.adv-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* 10. Cooperation Workflow */
.workflow-steps {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 48px;
}

.step-card {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px 20px;
  display: flex;
  flex-direction: column;
}

.step-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

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

.step-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(6, 182, 212, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.step-time {
  font-size: 0.78rem;
  color: var(--emerald);
  font-weight: 600;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-arrow {
  display: flex;
  align-items: center;
  color: var(--text-muted);
  font-size: 1.4rem;
  font-weight: bold;
}

.workflow-cta-box {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.9) 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.cta-box-text h4 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.cta-box-text p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* 11. Interactive Calculator */
.calculator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.calc-left {
  padding: 40px;
}

.calc-right {
  background: rgba(10, 16, 28, 0.85);
  border-left: 1px solid var(--border-subtle);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.calc-group {
  margin-bottom: 28px;
}

.calc-label {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: #E2E8F0;
  margin-bottom: 10px;
}

.calc-select {
  width: 100%;
  background: #0B1120;
  border: 1px solid var(--border-light);
  color: #F8FAFC;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  outline: none;
}

.calc-select:focus {
  border-color: var(--tg-blue);
}

.calc-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.calc-slider-val {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: #38BDF8;
}

.calc-slider {
  width: 100%;
  height: 8px;
  background: #1E293B;
  border-radius: 4px;
  outline: none;
  accent-color: var(--cyan);
}

.calc-slider-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.currency-pills {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.currency-pills .pill {
  padding: 8px 16px;
  background: #0B1120;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.currency-pills .pill:hover {
  border-color: var(--border-light);
  color: #FFFFFF;
}

.currency-pills .pill.active {
  background: rgba(36, 161, 222, 0.15);
  border-color: var(--tg-blue);
  color: #38BDF8;
  font-weight: 600;
}

.calc-result-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.result-tier-badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.15) 0%, rgba(245, 158, 11, 0.25) 100%);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #FCD34D;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  text-align: center;
  margin-bottom: 8px;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.result-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.result-value {
  font-size: 0.92rem;
  font-weight: 700;
  color: #FFFFFF;
}

.result-cta-wrap {
  margin-top: 14px;
}

/* 12. Security Grid */
.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.security-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
}

.security-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.sec-icon {
  width: 44px;
  height: 44px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #34D399;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.sec-icon svg {
  width: 22px;
  height: 22px;
}

.security-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
}

.security-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* 13. FAQ Accordion */
.faq-accordion {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover, .faq-item.active {
  border-color: var(--border-light);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: #FFFFFF;
}

.faq-icon {
  font-size: 1.4rem;
  color: var(--tg-blue);
  transition: transform var(--transition-fast);
  line-height: 1;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px 24px;
}

.faq-answer p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 14. CTA Banner Section */
.cta-banner-section {
  padding: 40px 0 80px 0;
}

.cta-banner-card {
  background: radial-gradient(circle at 50% 50%, #15243e 0%, #0d1627 100%);
  border: 1px solid rgba(36, 161, 222, 0.35);
  border-radius: var(--radius-xl);
  padding: 56px 30px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.pulse-beacon {
  width: 12px;
  height: 12px;
  background-color: #38BDF8;
  border-radius: 50%;
  margin: 0 auto 18px auto;
  box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7);
  animation: pulse 2s infinite;
}

.cta-banner-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.cta-banner-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 32px auto;
}

.cta-banner-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 15. Site Footer */
.site-footer {
  background: #050810;
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #FFFFFF;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 4px;
}

.footer-logo svg {
  color: var(--tg-blue);
}

.footer-tg-label {
  color: var(--text-secondary);
}

.footer-tg-link {
  color: #38BDF8;
  font-weight: 600;
  font-family: var(--font-mono);
}

.footer-tg-link:hover {
  text-decoration: underline;
}

.footer-copy {
  color: var(--text-secondary);
}

/* 16. Floating Desktop Widget */
.floating-widget {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.floating-card {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(36, 161, 222, 0.4);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  display: none;
  flex-direction: column;
  gap: 8px;
  animation: fadeIn 0.3s ease;
}

.floating-card.active {
  display: flex;
}

.floating-badge {
  font-size: 0.75rem;
  color: var(--emerald);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.floating-text {
  font-size: 0.85rem;
  color: #FFFFFF;
  font-weight: 600;
}

.floating-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #24A1DE 0%, #0088cc 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow-tg);
  transition: transform var(--transition-bounce), box-shadow var(--transition-fast);
}

.floating-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 10px 35px rgba(36, 161, 222, 0.6);
}

.icon-tg-large {
  width: 30px;
  height: 30px;
}

/* 17. Mobile Bottom Sticky Bar */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(11, 16, 29, 0.96);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(36, 161, 222, 0.3);
  padding: 10px 16px;
  z-index: 1000;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
}

.mobile-bar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.mobile-bar-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: #FFFFFF;
}

.mobile-bar-sub {
  font-size: 0.75rem;
  color: #38BDF8;
  font-family: var(--font-mono);
}

/* 18. Telegram Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(4, 7, 13, 0.85);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #0D1424;
  border: 1px solid rgba(36, 161, 222, 0.35);
  border-radius: var(--radius-xl);
  max-width: 440px;
  width: 100%;
  padding: 32px 28px;
  position: relative;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 18px;
  font-size: 1.8rem;
  color: var(--text-muted);
  line-height: 1;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: #FFFFFF;
}

.modal-header {
  text-align: center;
  margin-bottom: 24px;
}

.modal-tg-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, #24A1DE 0%, #0088cc 100%);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px auto;
  box-shadow: 0 4px 18px rgba(36, 161, 222, 0.4);
}

.modal-tg-icon svg {
  width: 28px;
  height: 28px;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.modal-sub {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 20px;
}

.qr-box {
  width: 180px;
  height: 180px;
  background: #090D16;
  border: 2px solid rgba(36, 161, 222, 0.4);
  border-radius: var(--radius-md);
  padding: 14px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.qr-code-svg {
  width: 100%;
  height: 100%;
}

.qr-center-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #24A1DE;
  color: #FFFFFF;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.qr-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.modal-account-box {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.account-details {
  display: flex;
  flex-direction: column;
}

.account-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.account-value {
  font-family: var(--font-mono);
  font-size: 0.98rem;
  font-weight: 700;
  color: #38BDF8;
}

.modal-security-tip {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 14px;
  line-height: 1.5;
  text-align: center;
}

/* 19. Toast Notification */
.toast-notification {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #10B981;
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
  z-index: 3000;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

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

.toast-icon {
  width: 20px;
  height: 20px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

/* 20. Responsive Media Queries */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.6rem;
  }

  .workflow-steps {
    flex-direction: column;
    gap: 16px;
  }

  .step-arrow {
    transform: rotate(90deg);
    justify-content: center;
    margin: -4px 0;
  }

  .calculator-card {
    grid-template-columns: 1fr;
  }

  .calc-right {
    border-left: none;
    border-top: 1px solid var(--border-subtle);
  }

  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 109px;
    left: 0;
    width: 100%;
    background: #0B101D;
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-150%);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 999;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero-section {
    padding: 50px 0 40px 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .desktop-only {
    display: none;
  }

  .hero-subtitle {
    font-size: 0.98rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .announcement-content {
    flex-direction: column;
    text-align: center;
  }

  .floating-widget {
    display: none; /* Hide floating widget on mobile in favor of sticky bottom bar */
  }

  .mobile-sticky-bar {
    display: flex;
  }

  body {
    padding-bottom: 70px;
  }

  .workflow-cta-box {
    flex-direction: column;
    text-align: center;
  }

  .cta-banner-actions {
    flex-direction: column;
    width: 100%;
  }

  .cta-banner-actions .btn {
    width: 100%;
  }

  .footer-container {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
}