.vp4i {
  --bg: #f0fdf4;
  --surface: #ffffff;
  --surface2: #f8fffe;
  --border: #d1fae5;
  --border2: #a7f3d0;
  --accent: #16a34a;
  --accent2: #22c55e;
  --accent3: #4ade80;
  --accent-light: #dcfce7;
  --text: #14532d;
  --text2: #166534;
  --muted: #6b7280;
  --muted2: #9ca3af;
  --dark: #0f2d1a;
  --dark2: #1a3d27;
  --radius: 10px;
  --radius-lg: 14px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.vp4i *,
.vp4i *::before,
.vp4i *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.vp4i a { text-decoration: none; color: inherit; }
.vp4i img { max-width: 100%; display: block; }
.vp4i ul, .vp4i ol { list-style: none; }
.vp4i button, .vp4i input { font-family: inherit; font-size: inherit; }

.vp4i-wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.vp4i-section { padding: 64px 0; }

.vp4i-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent);
  margin-bottom: 10px;
}

.vp4i-h2 {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.025em;
  margin-bottom: 8px;
  line-height: 1.15;
}

.vp4i-h3 {
  font-size: clamp(16px, 2.5vw, 20px);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.vp4i-lead { font-size: 15px; color: var(--muted); max-width: 640px; line-height: 1.7; }

.vp4i-bc { background: var(--surface); border-bottom: 1px solid var(--border); padding: 12px 0; }
.vp4i-bc-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.vp4i-bc-item a { color: var(--accent); font-weight: 500; }
.vp4i-bc-item a:hover { text-decoration: underline; }
.vp4i-bc-sep { color: var(--muted2); }
.vp4i-bc-current { color: var(--text); font-weight: 600; }

.vp4i-hero { background: var(--accent-light); padding: 72px 0 60px; }

.vp4i-hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border2);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.vp4i-hero h1 {
  font-size: clamp(26px, 5vw, 44px);
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.vp4i-hero h1 span { color: var(--accent); }
.vp4i-hero-sub { font-size: 16px; color: var(--text2); max-width: 580px; line-height: 1.7; margin-bottom: 32px; }
.vp4i-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.vp4i-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  border-radius: var(--radius);
  padding: 13px 24px;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, transform 0.15s;
  border: none;
}

.vp4i-btn:hover { transform: translateY(-1px); }
.vp4i-btn-primary { background: var(--accent); color: #fff; }
.vp4i-btn-primary:hover { background: var(--text2); color: #fff; }

.vp4i-btn-ghost {
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  padding: 12px 22px;
}

.vp4i-btn-ghost:hover {
  background: var(--accent);
  color: var(--accent-light);
  border-color: var(--accent);
}

.vp4i-btn-icon { font-size: 17px; }

.vp4i-specs { background: var(--dark2); border-top: 1px solid var(--accent); border-bottom: 1px solid var(--accent); }
.vp4i-specs-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.vp4i-spec-item { padding: 22px 28px; border-right: 1px solid var(--accent); }
.vp4i-spec-item:last-child { border-right: none; }
.vp4i-spec-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent3); margin-bottom: 6px; }
.vp4i-spec-value { font-size: 15px; font-weight: 700; color: #fff; }

.vp4i-what { background: var(--surface); }
.vp4i-what-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; margin-top: 40px; }
.vp4i-what-text p { font-size: 15px; color: var(--muted); line-height: 1.75; margin-bottom: 16px; }
.vp4i-what-text p:last-child { margin-bottom: 0; }
.vp4i-proto-list { display: flex; flex-direction: column; gap: 10px; }

.vp4i-proto-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.vp4i-proto-badge {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 6px;
  padding: 3px 8px;
  white-space: nowrap;
}

.vp4i-proto-name { font-size: 14px; font-weight: 600; color: var(--text); }
.vp4i-proto-desc { font-size: 13px; color: var(--muted); margin-top: 2px; }

.vp4i-countries { background: var(--bg); }
.vp4i-section-head { margin-bottom: 40px; }
.vp4i-country-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.vp4i-country-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.vp4i-country-card:hover { border-color: var(--accent2); box-shadow: 0 4px 20px rgba(22, 163, 74, 0.1); }

.vp4i-country-flag {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: #fff;
}

.vp4i-flag-zw { background: #006400; }
.vp4i-flag-za { background: #007A4D; }
.vp4i-flag-ng { background: #008751; }
.vp4i-flag-ke { background: #006600; }
.vp4i-flag-gh { background: #c8102e; }
.vp4i-flag-tz { background: #1EB53A; }

.vp4i-country-name { font-size: 18px; font-weight: 800; color: var(--text); letter-spacing: -0.02em; }
.vp4i-country-carriers { font-size: 13px; color: var(--muted); line-height: 1.6; }

.vp4i-country-card .vp4i-btn {
  width: 100%;
  justify-content: center;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 14px;
  padding: 11px 16px;
}

.vp4i-country-card .vp4i-btn:hover { background: var(--accent); color: #fff; }

.vp4i-howto { background: var(--surface); }
.vp4i-steps { display: flex; flex-direction: column; margin-top: 36px; max-width: 720px; }

.vp4i-step { display: flex; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--border); }
.vp4i-step:last-child { border-bottom: none; }

.vp4i-step-num {
  width: 36px;
  height: 36px;
  min-width: 36px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
}

.vp4i-step-body h3 { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.vp4i-step-body p { font-size: 14px; color: var(--muted); line-height: 1.7; }
.vp4i-step-body a { color: var(--accent); font-weight: 600; }
.vp4i-step-body a:hover { text-decoration: underline; }

.vp4i-tips { background: var(--surface2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.vp4i-tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 36px; }

.vp4i-tip-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 24px; }
.vp4i-tip-icon { font-size: 26px; margin-bottom: 12px; }
.vp4i-tip-card h3 { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.vp4i-tip-card p { font-size: 14px; color: var(--muted); line-height: 1.7; }

.vp4i-cta { background: var(--accent-light); padding: 60px 0; }
.vp4i-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.vp4i-cta-text h2 { font-size: clamp(20px, 3vw, 26px); font-weight: 800; color: var(--text); margin-bottom: 8px; letter-spacing: -0.02em; }
.vp4i-cta-text p { font-size: 15px; color: var(--text2); max-width: 480px; line-height: 1.65; }
.vp4i-cta .vp4i-btn-primary { font-size: 15px; padding: 14px 28px; background: var(--accent); color: #fff; white-space: nowrap; }
.vp4i-cta .vp4i-btn-primary:hover { background: var(--text2); color: #fff; }

.vp4i-related { background: var(--bg); padding: 64px 0; }
.vp4i-related-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 28px; }

.vp4i-related-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 12px 22px;
  font-size: 14px;
  color: var(--text2);
  font-weight: 600;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.vp4i-related-pill:hover { border-color: var(--accent); background: var(--accent-light); color: var(--accent); }

.vp4i-related-badge {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 4px;
  padding: 3px 8px;
}

@media (max-width: 900px) {
  .vp4i-what-grid { grid-template-columns: 1fr; }
  .vp4i-specs-inner { grid-template-columns: repeat(2, 1fr); }
  .vp4i-spec-item:nth-child(2) { border-right: none; }
  .vp4i-spec-item:nth-child(3) { border-top: 1px solid var(--accent); }
  .vp4i-spec-item:nth-child(4) { border-top: 1px solid var(--accent); border-right: none; }
}

@media (max-width: 720px) {
  .vp4i-country-grid { grid-template-columns: repeat(2, 1fr); }
  .vp4i-tips-grid { grid-template-columns: 1fr; }
  .vp4i-cta-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .vp4i-country-grid { grid-template-columns: 1fr; }
  .vp4i-specs-inner { grid-template-columns: 1fr; }
  .vp4i-spec-item { border-right: none; border-top: 1px solid var(--accent); }
  .vp4i-spec-item:first-child { border-top: none; }
  .vp4i-hero-actions { flex-direction: column; }
  .vp4i-btn { justify-content: center; }
}