/* ── elipptic5G Design System ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --t900: #051c1c;
  --t800: #093030;
  --t700: #0f4848;
  --t600: #166060;
  --t500: #1a9898;
  --t400: #22b8b8;
  --t300: #35d4c0;
  --t200: #60e8da;
  --t100: #a0f4ec;
  --t050: #e6faf8;

  --dark:  #060f18;
  --dark2: #0b1b2a;
  --dark3: #102030;
  --dark4: #162b3c;
  --dark5: #1e3548;

  --text:       #ddedf4;
  --text-muted: #7aaab8;
  --text-dim:   #4a7080;
  --white:      #ffffff;

  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(0,0,0,0.35);
  --glow:      0 0 40px rgba(26,152,152,0.22);

  --nav-h: 68px;
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

/* ── Typography ── */
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h3 { font-size: 1.2rem; font-weight: 600; line-height: 1.3; }
h4 { font-size: 1rem; font-weight: 600; }
p  { color: var(--text-muted); }

.gradient-text {
  background: linear-gradient(135deg, var(--t400), var(--t200));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Layout ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 100px 24px; }
.section-label {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--t400); margin-bottom: 10px;
}
.section-header { margin-bottom: 56px; }
.section-header p { font-size: 1.05rem; margin-top: 14px; max-width: 560px; line-height: 1.7; }

/* ── Navigation ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(6,15,24,0.88);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(26,152,152,0.14);
  height: var(--nav-h);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; padding: 0 24px;
}
.logo { display: flex; align-items: center; text-decoration: none; }
.logo img, .logo svg { height: 34px; width: auto; }

.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a {
  color: var(--text-muted); text-decoration: none;
  font-size: 0.88rem; font-weight: 500; transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 11px 22px; border-radius: 9px;
  font-weight: 600; font-size: 0.88rem; cursor: pointer;
  text-decoration: none; border: none; transition: all 0.22s; white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--t500), var(--t300));
  color: var(--dark);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(26,152,152,0.42); }
.btn-outline {
  border: 1.5px solid rgba(26,152,152,0.5); color: var(--t300); background: transparent;
}
.btn-outline:hover { background: rgba(26,152,152,0.1); border-color: var(--t400); }
.btn-ghost { color: var(--text-muted); background: transparent; }
.btn-ghost:hover { color: var(--white); }
.btn-sm { padding: 8px 16px; font-size: 0.82rem; }

/* ── Badge ── */
.badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 13px;
  background: rgba(26,152,152,0.12);
  border: 1px solid rgba(26,152,152,0.28);
  border-radius: 100px;
  font-size: 0.72rem; font-weight: 700; color: var(--t300);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--t300); animation: blink 2.2s infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.35} }

/* ── Stats Bar ── */
.stats-bar {
  background: var(--dark2);
  border-top: 1px solid rgba(26,152,152,0.1);
  border-bottom: 1px solid rgba(26,152,152,0.1);
  padding: 32px 24px;
}
.stats-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stat-item { text-align: center; }
.stat-val { font-size: 2.2rem; font-weight: 800; letter-spacing: -0.03em; }
.stat-desc { font-size: 0.76rem; color: var(--text-muted); font-weight: 500; margin-top: 4px; }

/* ── Cards ── */
.card {
  background: var(--dark3); border: 1px solid rgba(26,152,152,0.14);
  border-radius: var(--radius-lg); padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
}
.card:hover { border-color: rgba(26,152,152,0.38); transform: translateY(-4px); }
.card-top-bar { height: 3px; background: linear-gradient(90deg, var(--t600), var(--t300)); border-radius: 2px; margin-bottom: 28px; }

/* ── Divider ── */
.divider { height: 1px; background: rgba(26,152,152,0.1); margin: 0; }

/* ── Footer ── */
footer {
  background: var(--dark2);
  border-top: 1px solid rgba(26,152,152,0.1);
  padding: 56px 24px 28px;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-grid {
  display: grid; grid-template-columns: 2.2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 44px;
}
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { font-size: 0.84rem; max-width: 250px; line-height: 1.65; }
.footer-col h5 {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--t400); margin-bottom: 16px;
}
.footer-col a {
  display: block; font-size: 0.84rem; color: var(--text-muted);
  text-decoration: none; margin-bottom: 10px; transition: color 0.2s;
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid rgba(26,152,152,0.08);
  font-size: 0.76rem; color: var(--text-dim); flex-wrap: wrap; gap: 12px;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-dim); text-decoration: none; }
.footer-links a:hover { color: var(--text-muted); }

/* ── Responsive ── */
@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .nav-links { display: none; }
  section { padding: 72px 20px; }
}