:root {
  --bg: #03070d;
  --bg2: #07111f;
  --card: rgba(9, 20, 34, 0.82);
  --card2: rgba(255, 255, 255, 0.04);
  --line: rgba(0, 151, 255, 0.26);
  --line2: rgba(255, 255, 255, 0.08);
  --blue: #0078ff;
  --cyan: #00c2ff;
  --text: #ffffff;
  --muted: #aeb9c7;
  --radius: 26px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 10%, rgba(0, 120, 255, .26), transparent 30%),
    radial-gradient(circle at 15% 20%, rgba(0, 194, 255, .13), transparent 28%),
    linear-gradient(180deg, #03070d 0%, #061120 52%, #02050a 100%);
  overflow-x: hidden;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 85%);
}

a {
  color: inherit;
  text-decoration: none;
}

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 6%;
  border-bottom: 1px solid var(--line);
  background: rgba(3, 7, 13, .82);
  backdrop-filter: blur(18px);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 2px solid var(--blue);
  border-radius: 50%;
  font-weight: 900;
  letter-spacing: -2px;
  background: radial-gradient(circle, rgba(0,194,255,.32), rgba(0,0,0,.85) 68%);
  box-shadow: 0 0 28px rgba(0,120,255,.45);
}

.logo-text {
  display: grid;
}

.logo-text strong {
  letter-spacing: 5px;
  font-size: 18px;
}

.logo-text small {
  color: var(--cyan);
  letter-spacing: 6px;
  font-size: 10px;
}

nav {
  display: flex;
  gap: 28px;
  color: var(--muted);
  font-size: 15px;
}

nav a:hover {
  color: var(--text);
}

.hero {
  min-height: calc(100vh - 85px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 520px;
  gap: 58px;
  align-items: center;
  padding: 70px 6%;
}

.tag {
  margin: 0 0 14px;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 4px;
  font-size: 12px;
  font-weight: 800;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(44px, 7.5vw, 94px);
  line-height: .92;
  letter-spacing: -4px;
  text-transform: uppercase;
}

h2 {
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1;
  letter-spacing: -2px;
  text-transform: uppercase;
}

h3 {
  margin-bottom: 12px;
  font-size: 23px;
}

p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.hero-copy p {
  max-width: 670px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 800;
}

.primary {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 16px 38px rgba(0, 120, 255, .28);
}

.secondary {
  border: 1px solid var(--line);
  background: var(--card2);
}

.tech-panel {
  position: relative;
  min-height: 560px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    radial-gradient(circle at 72% 28%, rgba(0, 194, 255, .23), transparent 22%),
    linear-gradient(150deg, rgba(10, 28, 48, .9), rgba(3, 8, 15, .82));
  box-shadow: 0 28px 90px rgba(0,0,0,.48), inset 0 0 0 1px rgba(255,255,255,.05);
  overflow: hidden;
}

.tech-panel::before {
  content: "";
  position: absolute;
  inset: 75px 36px 36px;
  background:
    linear-gradient(var(--line2) 1px, transparent 1px),
    linear-gradient(90deg, var(--line2) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: .7;
}

.panel-top,
.status-card,
.network {
  position: relative;
  z-index: 1;
}

.panel-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 20px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 2px;
  border-bottom: 1px solid var(--line);
}

.panel-top span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--line);
}

.panel-top strong {
  margin-left: auto;
  color: var(--cyan);
  font-size: 11px;
}

.status-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(2, 8, 16, .68);
  box-shadow: inset 0 0 24px rgba(0, 120, 255, .08);
}

.main-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 26px;
  padding: 26px;
}

.status-card small {
  display: block;
  color: var(--muted);
  margin-bottom: 8px;
}

.status-card strong {
  font-size: 28px;
}

.shield {
  width: 120px;
  height: 120px;
  display: grid;
  place-items: center;
  border: 2px solid rgba(0, 194, 255, .65);
  border-radius: 36px 36px 48px 48px;
  background: radial-gradient(circle, rgba(0, 194, 255, .26), rgba(0, 120, 255, .08));
  box-shadow: 0 0 42px rgba(0, 120, 255, .36);
  clip-path: polygon(50% 0, 92% 18%, 82% 82%, 50% 100%, 18% 82%, 8% 18%);
}

.shield span {
  font-size: 48px;
  color: var(--cyan);
}

.mini-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 14px;
}

.mini-grid .status-card {
  padding: 18px;
}

.mini-grid strong {
  font-size: 21px;
}

.bar {
  height: 7px;
  overflow: hidden;
  border-radius: 20px;
  background: rgba(255,255,255,.08);
}

.bar i {
  display: block;
  height: 100%;
  border-radius: 20px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.network {
  height: 170px;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 194, 255, .18), transparent 28%),
    rgba(2, 8, 16, .58);
}

.network::before,
.network::after {
  content: "";
  position: absolute;
  inset: 50%;
  width: 260px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  transform-origin: left;
}

.network::before {
  transform: rotate(20deg) translateX(-130px);
}

.network::after {
  transform: rotate(-22deg) translateX(-130px);
}

.node {
  position: absolute;
  width: 16px;
  height: 16px;
  border: 3px solid var(--cyan);
  border-radius: 50%;
  background: #061120;
  box-shadow: 0 0 22px rgba(0, 194, 255, .7);
}

.n1 { left: 14%; top: 32%; }
.n2 { left: 34%; top: 70%; }
.n3 { left: 50%; top: 48%; }
.n4 { right: 32%; top: 25%; }
.n5 { right: 18%; top: 64%; }
.n6 { right: 10%; top: 36%; }

.section,
.security,
.contact {
  padding: 90px 6%;
}

.section-title {
  max-width: 860px;
  margin-bottom: 36px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.cards article {
  min-height: 230px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(10, 24, 40, .88), rgba(4, 10, 18, .8));
}

.card-icon {
  display: inline-grid;
  place-items: center;
  width: 50px;
  height: 50px;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--cyan);
  font-weight: 900;
  background: rgba(0,120,255,.08);
}

.security {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 52px;
  align-items: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(0, 120, 255, .055);
}

ul {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
}

li {
  margin-bottom: 14px;
  color: var(--text);
  font-size: 17px;
}

li::before {
  content: "✓";
  margin-right: 10px;
  color: var(--cyan);
  font-weight: 900;
}

.security-visual {
  position: relative;
  min-height: 420px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    radial-gradient(circle, rgba(0, 194, 255, .18), transparent 36%),
    linear-gradient(145deg, rgba(9, 20, 34, .78), rgba(1, 5, 12, .82));
  overflow: hidden;
}

.ring {
  position: absolute;
  border: 1px solid rgba(0, 194, 255, .33);
  border-radius: 50%;
}

.ring-one {
  width: 300px;
  height: 300px;
  animation: pulse 4s infinite ease-in-out;
}

.ring-two {
  width: 220px;
  height: 220px;
  animation: pulse 4s infinite ease-in-out reverse;
}

.lock {
  position: relative;
  width: 124px;
  height: 104px;
  border: 2px solid var(--cyan);
  border-radius: 22px;
  background: rgba(0, 120, 255, .18);
  box-shadow: 0 0 50px rgba(0, 120, 255, .45);
}

.lock span {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 90px;
  height: 76px;
  border: 2px solid var(--cyan);
  border-bottom: 0;
  border-radius: 46px 46px 0 0;
}

.lock strong {
  position: absolute;
  left: 50%;
  top: 42%;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--cyan);
  transform: translateX(-50%);
}

.lock strong::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 12px;
  width: 4px;
  height: 28px;
  background: var(--cyan);
  border-radius: 4px;
}

@keyframes pulse {
  0%, 100% { transform: scale(.98); opacity: .65; }
  50% { transform: scale(1.06); opacity: 1; }
}

.contact {
  display: grid;
  grid-template-columns: 1fr 430px;
  gap: 46px;
  align-items: center;
}

.contact-box {
  display: grid;
  gap: 14px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.contact-box a,
.contact-box span {
  padding: 16px;
  border: 1px solid var(--line2);
  border-radius: 16px;
  color: var(--muted);
  background: rgba(255,255,255,.04);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 6%;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

footer strong {
  color: var(--text);
}

@media (max-width: 1050px) {
  .hero,
  .security,
  .contact {
    grid-template-columns: 1fr;
  }

  .tech-panel,
  .security-visual {
    max-width: 620px;
  }

  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .header {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  nav {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .hero,
  .section,
  .security,
  .contact {
    padding-left: 20px;
    padding-right: 20px;
  }

  h1 {
    letter-spacing: -2px;
  }

  .tech-panel {
    min-height: 520px;
    padding: 16px;
  }

  .main-status {
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
  }

  .shield {
    width: 96px;
    height: 96px;
  }

  .mini-grid,
  .cards {
    grid-template-columns: 1fr;
  }

  .network {
    display: none;
  }

  footer {
    flex-direction: column;
  }
}