:root {
  --bg: #071d2b;
  --panel: #0e3045;
  --cyan: #38d5ff;
  --lime: #a3ff6f;
  --text: #eaf8ff;
  --muted: #9ec1d0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
}

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

header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 22px;
  background: rgba(7, 29, 43, 0.82);
  backdrop-filter: blur(14px);
}

.logo {
  font-size: 1.4rem;
  font-weight: 950;
  color: var(--cyan);
}

nav {
  display: flex;
  gap: 24px;
  font-weight: 800;
}

.hero,
.support,
.coverage,
.knowledge,
footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 72px 22px;
}

.hero {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 44px;
  align-items: center;
  min-height: 84vh;
}

.console {
  border: 1px solid rgba(56, 213, 255, 0.3);
  border-radius: 28px;
  padding: 24px;
  background: #02121d;
  box-shadow: 0 0 80px rgba(56, 213, 255, 0.16);
  font-family: Consolas, Monaco, monospace;
}

.console-top {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.console-top span {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--lime);
}

.console p {
  color: var(--lime);
}

.tag {
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  font-size: clamp(3rem, 6.6vw, 7rem);
  line-height: 0.9;
  letter-spacing: -0.07em;
}

h2 {
  font-size: clamp(2.1rem, 4vw, 4.4rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

p {
  color: var(--muted);
  line-height: 1.75;
}

.lead {
  max-width: 720px;
  font-size: 1.14rem;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.support-grid article,
.meter-card {
  padding: 24px;
  border-radius: 26px;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.coverage {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 40px;
  align-items: center;
  background: linear-gradient(135deg, rgba(56, 213, 255, 0.12), rgba(163, 255, 111, 0.08));
  max-width: none;
  padding-left: max(22px, calc((100vw - 1180px) / 2));
  padding-right: max(22px, calc((100vw - 1180px) / 2));
}

.meter-card {
  display: grid;
  gap: 16px;
}

input[type="range"] {
  accent-color: var(--cyan);
}

#ticketValue {
  font-size: 2.7rem;
  color: var(--lime);
}

.knowledge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.knowledge-list span {
  padding: 13px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

footer {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 34px;
}

footer a {
  color: var(--cyan);
  font-weight: 900;
}

form {
  display: grid;
  gap: 14px;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  padding: 16px;
  font: inherit;
}

textarea {
  min-height: 130px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 15px 20px;
  background: var(--cyan);
  color: var(--bg);
  font-weight: 950;
  cursor: pointer;
}

small {
  min-height: 24px;
  color: var(--lime);
}

@media (max-width: 880px) {
  header,
  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero,
  .support-grid,
  .coverage,
  footer {
    grid-template-columns: 1fr;
  }
}