:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #071016;
  --panel: rgba(14, 27, 38, 0.72);
  --line: rgba(255, 255, 255, 0.11);
  --text: #eef8ff;
  --muted: #a7b6c5;
  --cyan: #21d4e8;
  --green: #20d18f;
  --gold: #ffd166;
  --rose: #ff6f8f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 20% 0%, rgba(33, 212, 232, 0.18), transparent 34%), radial-gradient(circle at 90% 16%, rgba(32, 209, 143, 0.14), transparent 28%), var(--bg);
  color: var(--text);
  letter-spacing: 0;
}

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

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 6vw;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 16, 22, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  color: #061016;
}

.nav nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.nav-cta,
.button {
  border-radius: 8px;
  padding: 12px 16px;
  font-weight: 800;
}

.nav-cta,
.primary {
  background: linear-gradient(135deg, var(--cyan), var(--green));
  color: #061016;
}

.secondary {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.06);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 42px;
  align-items: center;
  min-height: 760px;
  padding: 58px 6vw 72px;
}

.eyebrow {
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .12em;
}

h1 {
  margin: 0;
  max-width: 920px;
  font-size: clamp(40px, 6vw, 78px);
  line-height: .95;
}

h2 {
  margin: 0 0 14px;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.05;
}

h3 {
  margin: 0 0 8px;
}

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

.lead {
  max-width: 820px;
  font-size: 18px;
}

.hero-actions,
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.trust-row span {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  color: #cfeaf2;
  padding: 8px 12px;
  font-size: 13px;
}

.hero-media {
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: 0 30px 90px rgba(0,0,0,.45), 0 0 42px rgba(33,212,232,.12);
}

.hero-media img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}

.section {
  margin: 0 6vw 34px;
  padding: 42px;
  border-radius: 18px;
}

.glass,
.panel-card,
.price-card,
.article-card {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 70px rgba(0,0,0,.28);
}

.feature-grid,
.pricing-grid,
.article-grid,
.admin-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.feature-grid article,
.panel-card,
.price-card,
.article-card {
  border-radius: 12px;
  padding: 22px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 22px;
}

.check-list {
  display: grid;
  gap: 10px;
  padding-left: 0;
  list-style: none;
}

.check-list li::before {
  content: "✓";
  color: var(--green);
  margin-right: 9px;
}

.page {
  padding: 42px 0 20px;
}

.prose {
  max-width: 980px;
}

.prose h1 {
  font-size: clamp(36px, 5vw, 58px);
  margin-bottom: 18px;
}

.prose h2 {
  margin-top: 34px;
  font-size: 28px;
}

.article p {
  font-size: 17px;
}

.back-link {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--cyan);
}

.price {
  color: var(--gold);
  font-size: 30px;
  font-weight: 900;
}

.featured {
  outline: 2px solid rgba(33, 212, 232, .5);
}

.form {
  display: grid;
  gap: 14px;
  max-width: 720px;
}

.form label {
  display: grid;
  gap: 7px;
  color: #d7e8f4;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(4, 11, 16, .86);
  color: var(--text);
  padding: 13px;
  font: inherit;
}

.result,
pre,
code {
  white-space: pre-wrap;
  border-radius: 10px;
  background: rgba(0,0,0,.28);
  color: #d9f7ff;
  padding: 14px;
  overflow: auto;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 40px 6vw;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer p {
  max-width: 640px;
}

.footer-links {
  display: grid;
  gap: 8px;
}

@media (max-width: 980px) {
  .hero,
  .split {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .pricing-grid,
  .article-grid,
  .admin-grid {
    grid-template-columns: 1fr 1fr;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 5vw;
  }
}

@media (max-width: 640px) {
  .feature-grid,
  .pricing-grid,
  .article-grid,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .section {
    margin-inline: 4vw;
    padding: 24px;
  }
}