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

:root {
  --red: #ff3b30;
  --red-dark: #cc2a20;
  --dark: #0f0f0f;
  --dark2: #1a1a1a;
  --dark3: #242424;
  --card: #1e1e1e;
  --border: rgba(255,255,255,0.08);
  --text: #f0f0f0;
  --muted: #8a8a8a;
  --accent: #ff3b30;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.7;
  min-height: 100dvh;
  padding-bottom: 80px; /* space for sticky bar */
}

a { color: var(--red); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── HEADER ── */
.site-header {
  background: var(--dark2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--red);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.header-cta {
  background: var(--red);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none !important;
  transition: background 0.2s, transform 0.1s;
}
.header-cta:hover { background: var(--red-dark); transform: translateY(-1px); }

/* ── HERO ── */
.hero {
  padding: 48px 0 40px;
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.hero h1 span { color: var(--red); }

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 32px;
}

.hero-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.badge {
  background: var(--dark3);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8125rem;
  color: var(--muted);
  white-space: nowrap;
}

/* ── CTA BUTTONS ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--red);
  color: #fff;
  padding: 16px 28px;
  border-radius: var(--radius);
  font-size: 1.0625rem;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(255,59,48,0.35);
}
.btn-primary:hover {
  background: var(--red-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,59,48,0.45);
  text-decoration: none;
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text);
  padding: 14px 24px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--border);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}
.btn-secondary:hover { border-color: rgba(255,255,255,0.2); background: var(--dark3); text-decoration: none; }

.cta-block {
  margin: 36px 0;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

/* ── STEPS ── */
.steps {
  margin: 40px 0;
}

.steps-title {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.step {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-weight: 700;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.step-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.step-body p {
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── CARDS ── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card-icon {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.card h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.card p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ── HIGHLIGHT BOX ── */
.highlight {
  background: rgba(255,59,48,0.08);
  border: 1px solid rgba(255,59,48,0.2);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 32px 0;
}

.highlight p { margin: 0; font-size: 0.9375rem; }
.highlight strong { color: var(--red); }

/* ── PROSE ── */
.prose h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 40px 0 14px;
  padding-top: 8px;
}

.prose h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 28px 0 10px;
}

.prose p {
  margin-bottom: 16px;
  color: var(--text);
  font-size: 0.9875rem;
  line-height: 1.75;
}

.prose ul, .prose ol {
  padding-left: 20px;
  margin-bottom: 16px;
}

.prose li {
  margin-bottom: 8px;
  font-size: 0.9875rem;
  color: var(--text);
  line-height: 1.65;
}

.prose strong { color: #fff; font-weight: 700; }

/* ── TABLE ── */
.table-wrap { overflow-x: auto; margin: 24px 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th {
  background: var(--dark3);
  padding: 10px 14px;
  text-align: left;
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }

/* ── FAQ ── */
.faq { margin: 40px 0; }
.faq-title { font-size: 1.375rem; font-weight: 700; margin-bottom: 16px; }

details {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  background: var(--card);
  overflow: hidden;
}

details[open] { border-color: rgba(255,59,48,0.3); }

summary {
  padding: 16px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9375rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--red);
  flex-shrink: 0;
  margin-left: 12px;
  font-weight: 300;
}

details[open] summary::after { content: '−'; }

.faq-answer {
  padding: 0 20px 16px;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ── RELATED ── */
.related { margin: 40px 0; }
.related-title { font-size: 1.125rem; font-weight: 700; margin-bottom: 12px; color: var(--muted); }

.related-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.related-link {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.875rem;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}
.related-link:hover { border-color: rgba(255,59,48,0.4); background: var(--card); text-decoration: none; }
.related-link::before { content: '→'; color: var(--red); font-size: 0.875rem; flex-shrink: 0; }

/* ── FINAL CTA SECTION ── */
.final-cta {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  margin: 48px 0 32px;
  text-align: center;
}

.final-cta h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 10px; }
.final-cta p { color: var(--muted); margin-bottom: 24px; font-size: 0.9375rem; }

/* ── STICKY BOTTOM BAR ── */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(15,15,15,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sticky-bar-text {
  font-size: 0.875rem;
  color: var(--muted);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sticky-bar .btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--red);
  color: #fff;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-weight: 700;
  white-space: nowrap;
  text-decoration: none;
  flex-shrink: 0;
  transition: background 0.2s;
  animation: pulse-red 2s infinite;
}
.sticky-bar .btn-download:hover { background: var(--red-dark); text-decoration: none; }

@keyframes pulse-red {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,59,48,0.4); }
  50% { box-shadow: 0 0 0 8px rgba(255,59,48,0); }
}

/* ── BREADCRUMBS ── */
.breadcrumbs {
  padding: 14px 0 8px;
  font-size: 0.8125rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--text); }
.breadcrumbs span { color: var(--text); }

/* ── FOOTER ── */
.site-footer {
  background: var(--dark2);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: 48px;
}

.footer-inner {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: space-between;
}

.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 12px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 6px;
}
.footer-col a:hover { color: var(--text); }

.footer-bottom {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ── UTILITIES ── */
.section { margin: 48px 0; }
.text-red { color: var(--red); }
.text-muted { color: var(--muted); }
.mb-0 { margin-bottom: 0; }
.divider { height: 1px; background: var(--border); margin: 40px 0; }

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  .sticky-bar-text { display: none; }
  .hero { padding: 32px 0 28px; }
  .final-cta { padding: 28px 20px; }
  .footer-inner { flex-direction: column; gap: 20px; }
}