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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: #fafafa;
  color: #1a1a1a;
  line-height: 1.75;
}

/* =========================================
   Layout
   ========================================= */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

/* =========================================
   Header
   ========================================= */
header {
  background-color: #fff;
  border-bottom: 1px solid #e8e8e8;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.site-logo {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: -0.3px;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 28px;
}

nav a {
  font-size: 0.875rem;
  color: #555;
  text-decoration: none;
  transition: color 0.2s;
}

nav a:hover {
  color: #1a1a1a;
}

/* =========================================
   Hero
   ========================================= */
.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #1a1a1a;
  margin-bottom: 14px;
}

.hero p {
  font-size: 1rem;
  color: #666;
  max-width: 520px;
  margin: 0 auto;
}

/* =========================================
   Section base
   ========================================= */
section {
  padding: 56px 0;
  border-top: 1px solid #e8e8e8;
}

.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: #999;
  margin-bottom: 10px;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 32px;
  letter-spacing: -0.3px;
}

/* =========================================
   App Cards
   ========================================= */
.apps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.app-card {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 12px;
  padding: 28px;
  transition: box-shadow 0.2s;
}

.app-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.app-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  background: #f0f0f0;
  color: #555;
  border-radius: 4px;
  padding: 3px 8px;
  margin-bottom: 14px;
}

.app-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 12px;
}

.app-card p {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.7;
}

/* =========================================
   Privacy Policy
   ========================================= */
.policy-block {
  margin-bottom: 36px;
}

.policy-block:last-child {
  margin-bottom: 0;
}

.policy-block h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 10px;
}

.policy-block p,
.policy-block li {
  font-size: 0.9rem;
  color: #444;
  line-height: 1.75;
}

.policy-block ul {
  padding-left: 20px;
  margin-top: 8px;
}

.policy-block li {
  margin-bottom: 5px;
}

.policy-block a {
  color: #1a1a1a;
  text-decoration: underline;
}

.effective-date {
  font-size: 0.82rem;
  color: #999;
  margin-bottom: 32px;
}

/* =========================================
   Technical Support
   ========================================= */
.support-box {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 12px;
  padding: 36px;
}

.support-box p {
  font-size: 0.9rem;
  color: #444;
  margin-bottom: 20px;
}

.support-steps {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
}

.support-steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
  color: #444;
  margin-bottom: 12px;
}

.step-num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: #1a1a1a;
  color: #fff;
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.email-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #1a1a1a;
  color: #fff;
  border-radius: 8px;
  padding: 11px 20px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: default;
  user-select: text;
}

.email-icon {
  font-size: 1rem;
}

/* =========================================
   Footer
   ========================================= */
footer {
  border-top: 1px solid #e8e8e8;
  padding: 32px 0;
  text-align: center;
}

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

.footer-inner p {
  font-size: 0.82rem;
  color: #999;
}

.footer-inner a {
  color: #999;
  text-decoration: none;
}

.footer-inner a:hover {
  color: #555;
}

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 1.8rem;
  }

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

  nav {
    gap: 16px;
  }

  .support-box {
    padding: 24px;
  }
}