/* ─── Variables ─────────────────────────────────────────────────── */
:root {
  --bg-primary:   #141414;
  --bg-secondary: #1e1e1e;
  --bg-surface:   #212121;
  --bg-elevated:  #2a2a2a;
  --border:       rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  --accent-blue:       #48aaff;
  --accent-blue-dim:   rgba(72, 170, 255, 0.12);
  --accent-blue-glow:  rgba(72, 170, 255, 0.2);
  --accent-green:      #22c55e;
  --accent-green-dim:  rgba(34, 197, 94, 0.12);
  --accent-green-glow: rgba(34, 197, 94, 0.18);

  --text-primary:   #ececec;
  --text-secondary: #b4b4b4;
  --text-muted:     #757575;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

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

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ─── Layout ─────────────────────────────────────────────────────── */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 720px;
}

/* ─── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-blue);
  color: #040d18;
}
.btn-primary:hover {
  background: #6dbfff;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-blue-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-hover);
}
.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 16px;
}
.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.btn-large {
  padding: 14px 32px;
  font-size: 1rem;
}

/* ─── Nav ────────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(20, 20, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  display: flex;
  align-items: center;
}

/* ─── Hero ───────────────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 24px 96px;
  text-align: center;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  opacity: 0.18;
}

.hero-glow-blue {
  background: var(--accent-blue);
  top: -200px;
  left: -100px;
}

.hero-glow-green {
  background: var(--accent-green);
  top: -200px;
  right: -100px;
}

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

.badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--accent-green-dim);
  color: var(--accent-green);
  border: 1px solid rgba(34, 197, 94, 0.25);
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.gradient-text {
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  max-width: 540px;
  margin: 0 auto 36px;
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-trust {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ─── Sections ───────────────────────────────────────────────────── */
.section {
  padding: 88px 0;
}

.section-alt {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 14px;
}

.section-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 52px;
}

/* ─── Steps ──────────────────────────────────────────────────────── */
.steps {
  display: grid;    
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.step {
  padding: 28px 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s;
}

.step:hover {
  border-color: var(--border-hover);
}

.step-num {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 14px;
  line-height: 1;
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 650;
  margin-bottom: 8px;
  color: var(--text-primary);
}

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

/* ─── Folder Grid ─────────────────────────────────────────────────── */
.folder-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.folder-card {
  padding: 28px 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s, transform 0.15s;
}

.folder-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.folder-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.folder-icon-blue {
  background: var(--accent-blue-dim);
  color: var(--accent-blue);
}

.folder-icon-green {
  background: var(--accent-green-dim);
  color: var(--accent-green);
}

.folder-card h3 {
  font-size: 1rem;
  font-weight: 650;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.folder-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ─── Why Grid ───────────────────────────────────────────────────── */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.why-card {
  padding: 32px 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s;
}

.why-card:hover {
  border-color: var(--border-hover);
}

.why-icon {
  margin-bottom: 18px;
}

.why-card h3 {
  font-size: 1.05rem;
  font-weight: 650;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.why-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── FAQ ────────────────────────────────────────────────────────── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  border: none;
  transition: background 0.15s, color 0.15s;
  gap: 16px;
}

.faq-question:hover {
  background: var(--bg-elevated);
}

.faq-question[aria-expanded="true"] {
  color: var(--accent-blue);
  background: var(--bg-elevated);
}

.faq-chevron {
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent-blue);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  background: var(--bg-elevated);
}

.faq-answer.open {
  display: block;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-top: 16px;
}

/* ─── CTA Section ────────────────────────────────────────────────── */
.cta-section {
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  background: var(--accent-blue);
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.1;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.cta-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

/* ─── Footer ─────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

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

.footer-logo {
  font-size: 0.95rem;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ─── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .folder-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 600px) {
  .hero {
    padding: 72px 24px 64px;
  }

  .section {
    padding: 64px 0;
  }

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

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

  .hero-trust {
    gap: 14px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .faq-question {
    padding: 18px 20px;
    font-size: 0.9rem;
  }

  .faq-answer {
    padding: 0 20px 18px;
  }
}