:root {
  --bg: #0b1020;
  --panel: #121a2f;
  --panel-2: #17213a;
  --text: #eef3ff;
  --muted: #aeb9d4;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #6ee7b7;
  --accent-2: #93c5fd;
  --danger: #fca5a5;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(147, 197, 253, 0.22), transparent 35%),
    radial-gradient(circle at top right, rgba(110, 231, 183, 0.16), transparent 35%),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.hero {
  padding: 28px clamp(20px, 5vw, 72px) 72px;
  min-height: 82vh;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 76px;
}

.logo {
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: 22px;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 32px;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
}

h1 {
  font-size: clamp(42px, 7vw, 82px);
  line-height: 0.95;
  letter-spacing: -0.07em;
  margin: 12px 0 22px;
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1;
  letter-spacing: -0.045em;
  margin: 0 0 16px;
}

h3 {
  margin-top: 0;
  letter-spacing: -0.02em;
}

.hero-copy {
  max-width: 720px;
  color: var(--muted);
  font-size: 19px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 14px;
  padding: 13px 18px;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
  font-size: 15px;
}

.button.primary {
  color: #07111f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
}

.button.full {
  width: 100%;
}

.hero-card,
.card,
.demo-form,
.results {
  background: rgba(18, 26, 47, 0.82);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-card {
  padding: 24px;
  display: grid;
  gap: 14px;
}

.metric {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.metric span {
  color: var(--muted);
}

.metric strong {
  font-size: 26px;
}

.section {
  padding: 64px clamp(20px, 5vw, 72px);
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.card {
  padding: 22px;
}

.card p {
  color: var(--muted);
}

.demo-section {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(0, 1.18fr);
  gap: 24px;
  align-items: start;
}

.demo-form {
  padding: 22px;
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  border-radius: 12px;
  padding: 13px 14px;
  font-size: 15px;
  outline: none;
}

input:focus {
  border-color: var(--accent);
}

.small-note {
  color: var(--muted);
  font-size: 13px;
}

.results {
  padding: 22px;
  min-height: 500px;
}

.hidden {
  display: none;
}

.loading {
  color: var(--accent);
  font-weight: 800;
}

.result-block {
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}

.result-block:first-child {
  padding-top: 0;
}

.result-block:last-child {
  border-bottom: 0;
}

.result-block p,
.result-block li {
  color: var(--muted);
}

.notice {
  border: 1px solid rgba(110, 231, 183, 0.35);
  background: rgba(110, 231, 183, 0.08);
  color: var(--text);
  border-radius: 16px;
  padding: 14px;
  margin-bottom: 18px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--accent);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

td {
  color: var(--muted);
}

.score {
  color: var(--text);
  font-weight: 900;
}

pre {
  white-space: pre-wrap;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--line);
  padding: 16px;
  border-radius: 14px;
  color: var(--text);
  overflow-x: auto;
}

.roi-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.roi-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  padding: 16px;
  border-radius: 16px;
}

.roi-card span {
  color: var(--muted);
  display: block;
  font-size: 13px;
}

.roi-card strong {
  font-size: 24px;
}

.footer {
  padding: 32px clamp(20px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 960px) {
  .hero-grid,
  .demo-section {
    grid-template-columns: 1fr;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .cards,
  .roi-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    margin-bottom: 44px;
  }
}