/* ==========================================================================
   FlyBit Site 2 (flybit.online) - Streamlined Glacier Light Theme
   Colors: #0284C7 (Glacier Blue), #EA580C (Sunset Orange), #F8FAFC, #0F172A
   ========================================================================== */

:root {
  --glacier-blue: #0284C7;
  --glacier-blue-hover: #0369A1;
  --glacier-light: #E0F2FE;
  --sunset-orange: #EA580C;
  --bg-page: #F8FAFC;
  --bg-card: #FFFFFF;
  --border-soft: #E2E8F0;
  --border-hover: #BAE6FD;
  --text-dark: #0F172A;
  --text-muted: #475569;
  --text-light: #94A3B8;
  --shadow-card: 0 4px 20px rgba(15, 23, 42, 0.04);
  --shadow-hover: 0 12px 28px rgba(2, 132, 199, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-dark);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Navbar */
.nav-online {
  position: sticky;
  top: 0;
  background: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
  z-index: 1000;
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-dark);
}
.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}
.brand-pill {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 8px;
  background: var(--glacier-light);
  color: var(--glacier-blue);
  border-radius: 999px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-menu a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--glacier-blue);
}
.btn-glacier {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  background: var(--glacier-blue);
  color: #fff !important;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.25);
}
.btn-glacier:hover {
  background: var(--glacier-blue-hover);
  transform: translateY(-1px);
}
.btn-subtle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: #fff;
  border: 1px solid var(--border-soft);
  color: var(--text-dark) !important;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
}
.btn-subtle:hover {
  border-color: var(--glacier-blue);
  color: var(--glacier-blue) !important;
}

/* Centered Hero */
.hero-center {
  padding: 75px 0 45px;
  text-align: center;
}
.badge-stream {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: #FFFFFF;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--glacier-blue);
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
}
.hero-headline {
  font-size: 3.1rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-dark);
  max-width: 860px;
  margin: 0 auto 20px;
  letter-spacing: -0.6px;
}
.hero-headline .text-gradient {
  background: linear-gradient(135deg, var(--glacier-blue), var(--sunset-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subhead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 660px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-cta-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 45px;
}

/* OS Download Dock */
.os-dock {
  background: #FFFFFF;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  max-width: 820px;
  margin: 0 auto;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.dock-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}
.dock-items {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.dock-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-page);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dark);
}
.dock-item:hover {
  background: var(--glacier-light);
  border-color: var(--border-hover);
  color: var(--glacier-blue);
}

/* Alternating Feature Sections */
.feature-section { padding: 70px 0; }
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 70px;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse .feature-text { direction: ltr; }
.feature-text h2 {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 16px;
  line-height: 1.3;
}
.feature-text p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}
.feature-points { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.feature-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-dark);
}
.feature-points li i { color: #10B981; }

.feature-visual {
  background: #FFFFFF;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-card);
}
.speed-bar-item { margin-bottom: 16px; }
.speed-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.speed-bar-track {
  height: 10px;
  background: var(--bg-page);
  border-radius: 999px;
  overflow: hidden;
}
.speed-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--glacier-blue), var(--sunset-orange));
}

/* Pricing Section */
.pricing-section {
  padding: 80px 0;
  background: #FFFFFF;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}
.section-title-wrap { text-align: center; margin-bottom: 45px; }
.section-title-wrap h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; }
.section-title-wrap p { font-size: 1.05rem; color: var(--text-muted); }

.online-pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.online-price-card {
  background: var(--bg-page);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.online-price-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-hover);
}
.online-price-card.hot {
  background: #FFFFFF;
  border-color: var(--glacier-blue);
  box-shadow: var(--shadow-hover);
}
.plan-tier { font-size: 1.25rem; font-weight: 800; color: var(--text-dark); margin-bottom: 8px; }
.plan-amount { font-size: 2.5rem; font-weight: 800; color: var(--glacier-blue); margin-bottom: 20px; }
.plan-amount span { font-size: 0.95rem; color: var(--text-muted); font-weight: 500; }
.plan-list { list-style: none; margin-bottom: 28px; flex-grow: 1; }
.plan-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.92rem;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}
.plan-list li i { color: #10B981; }

/* Subpage styling */
.page-header {
  padding: 50px 0 40px;
  text-align: center;
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-soft);
}
.page-header h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 10px; }
.page-header p { font-size: 1.05rem; color: var(--text-muted); }
.page-body {
  padding: 50px 0;
  max-width: 860px;
  margin: 0 auto;
  line-height: 1.8;
}
.page-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 30px 0 14px;
  color: var(--text-dark);
  padding-bottom: 6px;
  border-bottom: 2px solid var(--glacier-light);
}
.page-body p { margin-bottom: 16px; color: #334155; }
.page-body ul, .page-body ol { margin: 0 0 20px 24px; }
.page-body li { margin-bottom: 8px; }

/* Ecosystem footer */
.eco-matrix {
  background: #F1F5F9;
  border-top: 1px solid var(--border-soft);
  padding: 24px 0;
}
.eco-box { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.eco-tag { font-size: 0.85rem; font-weight: 700; color: var(--text-muted); margin-bottom: 12px; }
.eco-links { display: flex; flex-wrap: wrap; gap: 10px; }
.eco-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: #FFFFFF;
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--text-dark);
}
.eco-btn:hover { border-color: var(--glacier-blue); color: var(--glacier-blue); }
.eco-btn.active { background: var(--glacier-light); border-color: var(--glacier-blue); color: var(--glacier-blue); font-weight: 700; }

.footer-online {
  background: #FFFFFF;
  border-top: 1px solid var(--border-soft);
  padding: 30px 0;
}
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.footer-nav { display: flex; gap: 20px; }
.footer-nav a:hover { color: var(--glacier-blue); }

@media (max-width: 860px) {
  .nav-menu { display: none; }
  .feature-row, .feature-row.reverse { grid-template-columns: 1fr; }
  .online-pricing-grid { grid-template-columns: 1fr; }
  .hero-headline { font-size: 2.2rem; }
  .footer-row { flex-direction: column; gap: 14px; text-align: center; }
}