:root {
  --accent: #10b981;
  --accent-light: #34d399;
  --accent-dim: rgba(16, 185, 129, 0.15);
  --accent-subtle: rgba(16, 185, 129, 0.08);
  --accent-border: rgba(16, 185, 129, 0.12);
  --bg: #0a0a0f;
  --text: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.45);
  --text-dim: rgba(255, 255, 255, 0.25);
  --font-display: 'JetBrains Mono', monospace;
  --font-body: 'Inter', sans-serif;
  --radius: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  background-image:
    linear-gradient(rgba(16, 185, 129, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.04) 1px, transparent 1px);
  background-size: 50px 50px;
}

a {
  color: inherit;
  text-decoration: none;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 40px;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--accent-border);
  transition: transform var(--transition);
}

.navbar.hidden {
  transform: translateY(-100%);
}

.nav-logo {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo .diamond {
  font-size: 16px;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--accent-border);
  padding: 20px 40px;
  flex-direction: column;
  gap: 16px;
  z-index: 99;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.mobile-menu a:hover {
  color: var(--accent);
}

.hero {
  text-align: center;
  padding: 160px 24px 100px;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(16, 185, 129, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 24px;
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
  font-family: var(--font-display);
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -2px;
  margin-bottom: 16px;
  line-height: 1.1;
}

.hero p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 460px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  background: var(--accent);
  color: #000;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.2);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent);
  font-size: 14px;
  border-radius: 6px;
  transition: all var(--transition);
  cursor: pointer;
  background: transparent;
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(16, 185, 129, 0.05);
  transform: translateY(-1px);
}

.section {
  padding: 100px 24px;
  border-top: 1px solid rgba(16, 185, 129, 0.06);
}

.section-label {
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 3px;
  text-align: center;
  margin-bottom: 10px;
  font-family: var(--font-display);
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: -0.5px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 820px;
  margin: 0 auto;
}

.feature-card {
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: rgba(16, 185, 129, 0.25);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(16, 185, 129, 0.06);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 22px;
  color: var(--accent);
}

.feature-card h3 {
  font-size: 15px;
  margin-bottom: 8px;
  font-weight: 600;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.video-container {
  max-width: 720px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--accent-border);
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  background: #111;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 680px;
  margin: 0 auto;
}

.install-step {
  background: rgba(16, 185, 129, 0.03);
  border: 1px solid rgba(16, 185, 129, 0.08);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

.install-step:hover {
  border-color: rgba(16, 185, 129, 0.18);
}

.step-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.step-number {
  width: 28px;
  height: 28px;
  background: var(--accent-dim);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
  font-family: var(--font-display);
  flex-shrink: 0;
}

.install-step h3 {
  font-size: 14px;
  font-weight: 600;
}

.install-step p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.install-step a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.install-step a:hover {
  color: var(--accent-light);
}

.download-card {
  max-width: 520px;
  margin: 0 auto;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  border-radius: 14px;
  padding: 48px 36px;
  text-align: center;
}

.download-card h2 {
  font-size: 26px;
  margin-bottom: 10px;
  font-weight: 700;
}

.download-meta {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.download-note {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 20px;
}

.faq-list {
  max-width: 620px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: rgba(16, 185, 129, 0.03);
  border: 1px solid rgba(16, 185, 129, 0.08);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item.active {
  border-color: rgba(16, 185, 129, 0.2);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  background: none;
  border: none;
  color: var(--text);
  width: 100%;
  text-align: left;
  font-family: var(--font-body);
}

.faq-question:hover {
  color: var(--accent);
}

.faq-icon {
  color: rgba(16, 185, 129, 0.4);
  font-size: 18px;
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 22px 18px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid rgba(16, 185, 129, 0.06);
  padding-top: 14px;
}

.footer {
  padding: 36px 24px;
  border-top: 1px solid rgba(16, 185, 129, 0.08);
  text-align: center;
}

.footer-logo {
  font-family: var(--font-display);
  color: rgba(16, 185, 129, 0.3);
  font-size: 12px;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

.footer p {
  font-size: 11px;
  color: var(--text-dim);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .navbar {
    padding: 14px 20px;
  }

  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    padding: 120px 20px 70px;
  }

  .hero h1 {
    font-size: 36px;
    letter-spacing: -1px;
  }

  .hero p {
    font-size: 14px;
  }

  .section {
    padding: 70px 20px;
  }

  .section-title {
    font-size: 22px;
    margin-bottom: 36px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .install-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .download-card {
    padding: 36px 24px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    max-width: 260px;
    justify-content: center;
  }
}