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

body {
  font-family: 'Inter', sans-serif;
  background: #ffffff;
  color: #111827;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── HEADER ── */
header {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #f3f4f6;
}
header img { height: 32px; width: auto; }
.header-link {
  font-size: 14px; font-weight: 500; color: #2563eb;
  text-decoration: none; display: flex; align-items: center; gap: 4px; transition: color 0.15s;
}
.header-link:hover { color: #1d4ed8; }
.header-link svg { width: 14px; height: 14px; }

/* ── MAIN ── */
main {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 64px 24px;
}

.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #eff6ff; color: #1d4ed8; font-size: 14px; font-weight: 500;
  padding: 8px 16px; border-radius: 9999px; border: 1px solid #dbeafe; margin-bottom: 32px;
}
.badge-dot {
  width: 8px; height: 8px; border-radius: 50%; background: #3b82f6;
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

h1 {
  font-size: clamp(2rem, 5vw, 3.75rem); font-weight: 700; text-align: center;
  max-width: 780px; line-height: 1.15; margin-bottom: 24px; color: #111827;
}
.gradient-text {
  background: linear-gradient(to right, #2563eb, #9333ea);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.desc {
  font-size: 18px; color: #4b5563; text-align: center;
  max-width: 640px; line-height: 1.7; margin-bottom: 16px;
}
.desc strong { color: #111827; }

.sub-desc {
  font-size: 15px; color: #6b7280; text-align: center;
  max-width: 520px; margin-bottom: 48px; line-height: 1.6;
}

.cta-btn {
  display: inline-flex; align-items: center; gap: 12px;
  background: linear-gradient(to right, #2563eb, #9333ea);
  color: #ffffff; font-size: 18px; font-weight: 600;
  padding: 16px 32px; border-radius: 12px; border: none; cursor: pointer;
  box-shadow: 0 10px 15px -3px rgba(37,99,235,0.3), 0 4px 6px -4px rgba(37,99,235,0.2);
  transition: background 0.2s, box-shadow 0.2s, transform 0.1s; text-decoration: none;
}
.cta-btn:hover {
  background: linear-gradient(to right, #1d4ed8, #7e22ce);
  box-shadow: 0 20px 25px -5px rgba(37,99,235,0.35), 0 8px 10px -6px rgba(37,99,235,0.2);
}
.cta-btn:active { transform: scale(0.97); }
.cta-btn svg { width: 20px; height: 20px; transition: transform 0.2s; }
.cta-btn:hover svg { transform: translateX(4px); }

/* ── Countdown ── */
.countdown-wrap {
  margin-top: 28px; display: flex; align-items: center; gap: 14px;
}
.countdown-ring { position: relative; width: 40px; height: 40px; flex-shrink: 0; }
.countdown-ring svg { transform: rotate(-90deg); }
.countdown-ring circle { fill: none; stroke: #e5e7eb; stroke-width: 3; }
.countdown-ring circle.track {
  stroke: #2563eb; stroke-dasharray: 101; stroke-dashoffset: 0; transition: stroke-dashoffset 1s linear;
}
.countdown-num {
  position: absolute; inset: 0; display: flex; align-items: center;
  justify-content: center; font-size: 13px; font-weight: 600; color: #2563eb;
}
.countdown-text { font-size: 14px; color: #9ca3af; line-height: 1.6; }
.countdown-text a { color: #2563eb; text-decoration: none; font-weight: 500; }
.countdown-text a:hover { text-decoration: underline; }

.url-hint { margin-top: 16px; font-size: 14px; color: #9ca3af; }
.url-hint code { font-family: Menlo, monospace; color: #6b7280; }

.divider { width: 100%; max-width: 640px; border: none; border-top: 1px solid #f3f4f6; margin: 64px 0 40px; }

.features {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px; max-width: 780px; width: 100%;
}
.feature-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 20px; border-radius: 12px; background: #f9fafb; border: 1px solid #f3f4f6;
}
.feature-icon { font-size: 32px; margin-bottom: 12px; }
.feature-title { font-size: 15px; font-weight: 600; color: #111827; margin-bottom: 6px; }
.feature-desc { font-size: 13px; color: #6b7280; line-height: 1.6; }

/* ── FOOTER ── */
footer {
  width: 100%; padding: 24px; border-top: 1px solid #f3f4f6;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
}
.footer-copy { font-size: 14px; color: #9ca3af; }
.footer-link { font-size: 14px; font-weight: 500; color: #2563eb; text-decoration: none; transition: color 0.15s; }
.footer-link:hover { color: #1d4ed8; }

@media (max-width: 600px) {
  .features { grid-template-columns: 1fr; }
  footer { justify-content: center; text-align: center; }
}