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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #0a0a0a;
  color: #c8c8c8;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ────────────────────────────────────────────── */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 0.5px solid rgba(255, 255, 255, 0.04);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, #1D9E75, #4adf9e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  color: #666;
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #1D9E75;
}

/* ── HERO ───────────────────────────────────────────── */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  max-width: 1100px;
  margin: 0 auto;
  gap: 60px;
}

.hero-content {
  flex: 1;
  max-width: 520px;
}

.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: #1D9E75;
  background: rgba(29, 158, 117, 0.1);
  border: 0.5px solid rgba(29, 158, 117, 0.2);
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.badge-apk {
  color: #7c5cfc;
  background: rgba(124, 92, 252, 0.1);
  border-color: rgba(124, 92, 252, 0.25);
}

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.15;
  color: #f0f0f0;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.hero h1 .accent {
  background: linear-gradient(135deg, #1D9E75, #4adf9e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 17px;
  color: #666;
  margin-bottom: 32px;
  max-width: 440px;
}

.hero-logo {
  width: 143px;
  height: 143px;
  animation: levitate 3s ease-in-out infinite;
  filter: drop-shadow(0 6px 16px rgba(29, 158, 117, 0.15));
  border-radius: 20px;
}

.hero-logo-mobile {
  display: none;
  margin-bottom: 16px;
}

.hero-logo-col {
  flex-shrink: 0;
}

.hero-logo-desktop {
  width: 200px;
  height: 200px;
}

@keyframes levitate {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.btn-primary {
  display: inline-block;
  background: linear-gradient(135deg, #1D9E75, #15805e);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 12px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(29, 158, 117, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(29, 158, 117, 0.35);
}

/* ── PHONE MOCKUP ───────────────────────────────────── */

.hero-mockup {
  flex-shrink: 0;
}

.phone {
  width: 260px;
  height: 530px;
  background: #111;
  border-radius: 36px;
  border: 2px solid #222;
  padding: 12px;
  position: relative;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.03);
}

.phone-notch {
  width: 120px;
  height: 24px;
  background: #0a0a0a;
  border-radius: 0 0 16px 16px;
  margin: 0 auto 8px;
}

.phone-screen {
  background: #0d0d0d;
  border-radius: 20px;
  padding: 14px;
  height: calc(100% - 44px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ps-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2px;
}

.ps-title {
  font-size: 11px;
  font-weight: 600;
  color: #555;
  letter-spacing: 0.05em;
}

.ps-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #1D9E75;
  opacity: 0.8;
}

.ps-touchpad {
  flex: 1;
  background: #161616;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #252525;
  min-height: 120px;
}

.ps-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.ps-btns span {
  height: 36px;
  background: #161616;
  border-radius: 10px;
}

.ps-arrows {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.ps-arrows span {
  height: 30px;
  background: #161616;
  border-radius: 8px;
}

.ps-arrows span:nth-child(1),
.ps-arrows span:nth-child(3),
.ps-arrows span:nth-child(4) {
  background: transparent;
}

.ps-kb {
  display: flex;
  gap: 8px;
}

.ps-kb span {
  height: 32px;
  background: #161616;
  border-radius: 8px;
}

.ps-kb span:first-child {
  flex: 1;
}

.ps-kb span:last-child {
  width: 40px;
}

/* ── FEATURES ───────────────────────────────────────── */

.features {
  max-width: 960px;
  margin: 0 auto;
  padding: 100px 24px;
}

h2 {
  font-size: 32px;
  font-weight: 700;
  color: #f0f0f0;
  text-align: center;
  margin-bottom: 10px;
  letter-spacing: -0.015em;
}

.section-sub {
  text-align: center;
  color: #666;
  font-size: 15px;
  margin-bottom: 50px;
}

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

.feature-card {
  background: #111;
  border: 0.5px solid #1a1a1a;
  border-radius: 16px;
  padding: 28px 24px;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: rgba(29, 158, 117, 0.2);
  transform: translateY(-3px);
}

.fc-icon {
  font-size: 22px;
  color: #1D9E75;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
}

/* ── DEMO VIDEO ────────────────────────────────────── */

.demo {
  max-width: 720px;
  margin: 0 auto;
  padding: 100px 24px;
  text-align: center;
}

.demo-video {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  border: 0.5px solid #1a1a1a;
}

.demo-video video {
  width: 100%;
  height: auto;
  display: block;
  background: #111;
}

.demo-note {
  font-size: 11px;
  color: #444;
  margin-top: 14px;
}

.demo-note code {
  background: #161616;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11px;
  color: #666;
}

/* ── FAQ ───────────────────────────────────────────── */

.faq {
  max-width: 720px;
  margin: 0 auto;
  padding: 100px 24px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: #111;
  border: 0.5px solid #1a1a1a;
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item:hover {
  border-color: rgba(29, 158, 117, 0.2);
}

.faq-item summary {
  padding: 18px 22px;
  font-size: 14px;
  font-weight: 500;
  color: #d0d0d0;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 18px;
  color: #555;
  transition: transform 0.2s;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 22px 18px;
  font-size: 13px;
  color: #666;
  line-height: 1.8;
}

/* ── HOW IT WORKS ───────────────────────────────────── */

.how {
  max-width: 960px;
  margin: 0 auto;
  padding: 100px 24px;
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 24px;
}

.step {
  flex: 1;
  max-width: 260px;
  text-align: center;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1D9E75, #15805e);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step h3 {
  font-size: 16px;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 8px;
}

.step p {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
}

.step-arrow {
  font-size: 22px;
  color: #333;
  padding-top: 12px;
}

/* ── SECURITY ───────────────────────────────────────── */

.security {
  max-width: 960px;
  margin: 0 auto;
  padding: 100px 24px;
}

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

.security-card {
  background: #111;
  border: 0.5px solid #1a1a1a;
  border-radius: 16px;
  padding: 28px 24px;
  transition: border-color 0.2s, transform 0.2s;
}

.security-card:hover {
  border-color: rgba(29, 158, 117, 0.2);
  transform: translateY(-3px);
}

.security-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 10px;
}

.security-card p {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
}

/* ── DOWNLOAD ──────────────────────────────────────── */

.download {
  max-width: 960px;
  margin: 0 auto;
  padding: 100px 24px;
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.download-card {
  background: #111;
  border: 0.5px solid #1a1a1a;
  border-radius: 16px;
  padding: 32px 28px;
  transition: border-color 0.2s, transform 0.2s;
}

.download-card:hover {
  border-color: rgba(29, 158, 117, 0.2);
  transform: translateY(-3px);
}

.dc-icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.download-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 8px;
}

.download-card p {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
  margin-bottom: 20px;
}

.download-card .btn-primary {
  text-align: center;
  display: block;
}

.dc-small {
  display: block;
  font-size: 11px;
  color: #444;
  margin-top: 10px;
  text-align: center;
}

.dc-code {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.dc-code code {
  background: #161616;
  border: 0.5px solid #222;
  border-radius: 6px;
  padding: 7px 12px;
  font-size: 12px;
  color: #aaa;
  font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
  user-select: all;
}

.dc-code code.dc-cmd {
  background: transparent;
  border: none;
  color: #555;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 8px 0 2px;
  user-select: none;
}

/* ── SUPPORT ───────────────────────────────────────── */

.support {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 24px 100px;
  text-align: center;
}

.support-links {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: #888;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: 12px;
  text-decoration: none;
  border: 0.5px solid #333;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}

.btn-secondary:hover {
  border-color: #555;
  color: #ccc;
  transform: translateY(-2px);
}

/* ── TECH ───────────────────────────────────────────── */

.tech {
  max-width: 720px;
  margin: 0 auto;
  padding: 100px 24px;
  text-align: center;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
}

.tech-tags span {
  background: #161616;
  border: 0.5px solid #222;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  color: #888;
  transition: border-color 0.2s, color 0.2s;
}

.tech-tags span:hover {
  border-color: rgba(29, 158, 117, 0.3);
  color: #1D9E75;
}

.tech-desc {
  font-size: 13px;
  color: #666;
  line-height: 1.8;
  max-width: 560px;
  margin: 0 auto;
}

.tech-desc code {
  background: #161616;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  color: #aaa;
}

.tech-desc strong {
  color: #999;
}

/* ── FOOTER ─────────────────────────────────────────── */

footer {
  border-top: 0.5px solid #1a1a1a;
  padding: 40px 24px;
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-tag {
  font-size: 12px;
  color: #444;
}

.footer-link {
  font-size: 12px;
  color: #555;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-link:hover {
  color: #1D9E75;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-copy {
  font-size: 12px;
  color: #333;
}

/* ── RESPONSIVE ─────────────────────────────────────── */

@media (max-width: 800px) {
  .hero {
    flex-direction: column;
    text-align: center;
    gap: 40px;
    padding-top: 100px;
  }

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

  .hero-logo-col {
    display: none;
  }

  .hero-logo-mobile {
    display: block;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-sub {
    max-width: 100%;
  }

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

  .step-arrow {
    transform: rotate(90deg);
    padding: 4px 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .nav-links {
    gap: 16px;
  }

  .phone {
    width: 220px;
    height: 450px;
  }

  .download-grid {
    grid-template-columns: 1fr;
  }

  .support-links {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 26px;
  }

  .nav-links a {
    font-size: 12px;
  }
}