:root {
  color-scheme: dark;
  --bg: #05070c;
  --panel: rgba(13, 20, 33, 0.76);
  --panel-strong: rgba(16, 29, 47, 0.92);
  --text: #eef7ff;
  --muted: #91a3b8;
  --line: rgba(142, 228, 255, 0.22);
  --cyan: #50dcff;
  --green: #62ffb6;
  --blue: #5a82ff;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family: "Noto Sans Thai", "Inter", system-ui, sans-serif;
  background:
    radial-gradient(circle at 20% 20%, rgba(80, 220, 255, 0.18), transparent 28rem),
    radial-gradient(circle at 82% 12%, rgba(98, 255, 182, 0.13), transparent 28rem),
    linear-gradient(135deg, #05070c 0%, #0a1020 52%, #06080e 100%);
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  background-image: url("../images/tech-grid.svg");
  background-size: cover;
  opacity: 0.42;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background: linear-gradient(180deg, rgba(5, 7, 12, 0.08), rgba(5, 7, 12, 0.72));
}

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

.page-shell {
  width: min(1120px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px 0 40px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0;
}

.brand,
.nav-links,
.panel-top,
.hero-actions,
.product-strip {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-family: "Inter", "Noto Sans Thai", sans-serif;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(80, 220, 255, 0.55);
  border-radius: 8px;
  color: #071119;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 0 28px rgba(80, 220, 255, 0.28);
}

.nav-links {
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
  gap: 48px;
  align-items: center;
  min-height: calc(100vh - 184px);
  padding: 56px 0 40px;
}

.eyebrow {
  width: fit-content;
  margin: 0 0 18px;
  padding: 8px 12px;
  border: 1px solid rgba(98, 255, 182, 0.25);
  border-radius: 999px;
  color: var(--green);
  background: rgba(98, 255, 182, 0.07);
  font-family: "Inter", "Noto Sans Thai", sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(44px, 7vw, 82px);
  line-height: 0.98;
  letter-spacing: 0;
}

.lead {
  max-width: 640px;
  margin: 24px 0 0;
  color: #b7c6d8;
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.65;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 8px;
  font-weight: 800;
}

.btn-primary {
  color: #061015;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  box-shadow: 0 18px 44px rgba(80, 220, 255, 0.23);
}

.btn-secondary {
  border: 1px solid var(--line);
  color: #d7eaff;
  background: rgba(255, 255, 255, 0.04);
}

.status-panel {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--panel-strong), rgba(9, 14, 24, 0.74));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  overflow: hidden;
}

.status-panel::before {
  position: absolute;
  inset: -1px;
  pointer-events: none;
  content: "";
  background: linear-gradient(135deg, rgba(80, 220, 255, 0.2), transparent 38%, rgba(98, 255, 182, 0.14));
  opacity: 0.84;
}

.status-panel > * {
  position: relative;
}

.panel-top {
  gap: 10px;
  color: var(--green);
  font-family: "Inter", "Noto Sans Thai", sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.pulse {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 0 9px rgba(98, 255, 182, 0.1), 0 0 22px rgba(98, 255, 182, 0.85);
}

.signal-card {
  display: grid;
  gap: 8px;
  margin-top: 28px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.signal-label,
.signal-card small {
  color: var(--muted);
}

.signal-card strong {
  font-family: "Inter", "Noto Sans Thai", sans-serif;
  font-size: 34px;
  line-height: 1;
}

.terminal {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid rgba(80, 220, 255, 0.18);
  border-radius: 8px;
  color: #b8eaff;
  background: rgba(2, 8, 14, 0.78);
  font: 600 13px/1.7 "Inter", monospace;
}

.terminal p {
  margin: 0;
}

.terminal span {
  color: var(--green);
}

.terminal-ready {
  color: #f0fff9;
}

.product-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.product-strip article {
  min-height: 130px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.classnote-card {
  position: relative;
}

.classnote-card-link {
  position: absolute;
  inset: 0;
}

.product-strip span {
  color: var(--cyan);
  font-family: "Inter", "Noto Sans Thai", sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.product-strip h2 {
  margin: 18px 0 6px;
  font-size: 20px;
}

.product-strip p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
  }

  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    min-height: auto;
    padding: 44px 0 24px;
  }

  h1 {
    font-size: clamp(40px, 12vw, 60px);
  }

  .product-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .page-shell {
    width: min(100% - 24px, 1120px);
    padding-top: 16px;
  }

  .hero-actions,
  .btn {
    width: 100%;
  }

  .status-panel {
    padding: 16px;
  }
}