:root {
  --bg: #090b10;
  --surface: #111625;
  --surface-subtle: #171f33;
  --surface-hover: #1c263e;
  --border: #1e293b;
  --border-highlight: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.25);
  --accent-hover: #4f46e5;
  --green: #22c55e;
  --green-glow: rgba(34, 197, 94, 0.2);
  --radius: 12px;
  --radius-lg: 18px;
  --font: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 11, 16, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 18px;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
}

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

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 28px rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--border-highlight);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: 10px;
}

/* Hero Section */
.hero {
  padding: 90px 0 60px;
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, rgba(9, 11, 16, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--surface-subtle);
  border: 1px solid var(--border-highlight);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 20px;
  max-width: 850px;
  margin-left: auto;
  margin-right: auto;
}

.hero-title span {
  background: linear-gradient(135deg, #a5b4fc 0%, #6366f1 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
}

/* Showcase / Screenshots */
.showcase {
  margin: 20px 0 80px;
}

.showcase-window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 40px rgba(99, 102, 241, 0.1);
}

.showcase-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.tab-btn {
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn.active, .tab-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.showcase-img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
  border: 1px solid var(--border);
}

/* Features Grid */
.features {
  padding: 80px 0;
}

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

.section-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-highlight);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

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

/* How It Works Steps */
.steps {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
}

.step-number {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  color: var(--accent);
  background: var(--surface-subtle);
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 16px;
  border: 1px solid var(--border-highlight);
}

/* Pricing Section */
.pricing {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.pricing-card {
  max-width: 540px;
  margin: 0 auto;
  background: var(--surface);
  border: 2px solid var(--accent);
  box-shadow: 0 0 35px var(--accent-glow);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.pricing-price {
  font-size: 48px;
  font-weight: 800;
  margin: 20px 0 10px;
}

.pricing-price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-secondary);
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin: 32px 0;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.pricing-features li svg {
  color: var(--green);
  flex-shrink: 0;
}

/* FAQ */
.faq {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  padding: 24px;
}

.faq-question {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.faq-answer {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
  color: var(--text-tertiary);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Policy Pages */
.policy-page {
  padding: 60px 0 100px;
  max-width: 800px;
  margin: 0 auto;
}

.policy-page h1 {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 8px;
}

.policy-meta {
  color: var(--text-tertiary);
  font-size: 14px;
  margin-bottom: 40px;
}

.policy-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 36px 0 14px;
  color: var(--text-primary);
}

.policy-content p, .policy-content li {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 15px;
}

.policy-content ul {
  padding-left: 24px;
  margin-bottom: 20px;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 34px;
  }
  .nav {
    display: none;
  }
  .hero-cta {
    flex-direction: column;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* Telegram Button */
.btn-telegram {
  background: rgba(34, 158, 217, 0.12);
  border: 1px solid rgba(34, 158, 217, 0.35);
  color: #38bdf8;
}

.btn-telegram:hover {
  background: #229ed9;
  border-color: #229ed9;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 0 20px rgba(34, 158, 217, 0.35);
}

/* Pricing Usage Meters */
.pricing-meters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0 28px;
  text-align: left;
}

@media (max-width: 560px) {
  .pricing-meters {
    grid-template-columns: 1fr;
  }
}

.meter-box {
  background: var(--surface-subtle);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  transition: all 0.2s;
}

.meter-box:hover {
  border-color: var(--accent);
  background: var(--surface-hover);
}

.meter-rate {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 4px;
}

.meter-rate span {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  margin-left: 4px;
}

.meter-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.meter-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Install Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 12, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  padding: 32px;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.7), 0 0 50px rgba(99, 102, 241, 0.2);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.modal-overlay.active .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.modal-close:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
  border-color: var(--border-highlight);
}

.modal-header {
  margin-bottom: 24px;
  padding-right: 32px;
}

.modal-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.modal-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

.install-options {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.install-option {
  display: block;
  text-decoration: none;
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all 0.2s ease;
}

.install-option:hover {
  border-color: var(--accent);
  background: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.4);
}

.install-option.recommended {
  border: 1.5px solid var(--accent);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, var(--surface-subtle) 100%);
}

.install-option.recommended:hover {
  border-color: var(--accent-hover);
  box-shadow: 0 10px 30px -8px var(--accent-glow);
}

.option-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.option-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.option-badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  padding: 3px 8px;
  border-radius: 6px;
}

.option-badge.rec {
  background: var(--accent);
  color: #fff;
}

.option-badge.std {
  background: var(--border-highlight);
  color: var(--text-secondary);
}

.option-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.option-action {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
}

.install-option:hover .option-action {
  color: #a5b4fc;
}