:root {
  --bg: #0f172a;
  --bg-alt: #111827;
  --surface: #020617;
  --surface-alt: #0b1220;
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.1);
  --accent-strong: rgba(34, 197, 94, 0.18);
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --border: rgba(148, 163, 184, 0.2);
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.75);
  --container-width: 1120px;
}

/* RESET */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1e293b 0, #020617 52%);
  color: var(--text);
  line-height: 1.6;
}

/* GLOBAL */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section.alt {
  padding: 80px 0;
  background: radial-gradient(circle at top, #020617 0, #020617 30%, #020617 60%, #020617 100%);
}

.section-header {
  margin-bottom: 40px;
  max-width: 640px;
}

.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 8px;
}

.section-header p {
  color: var(--text-muted);
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.7));
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.logo-mark {
  background: radial-gradient(circle at top left, #4ade80, #22c55e, #16a34a);
  color: #020617;
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.95rem;
}

.logo-text {
  font-size: 1.05rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.9rem;
}

.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}

.main-nav a:hover {
  color: var(--text);
  background: rgba(148, 163, 184, 0.12);
}

/* BURGER (mobile) */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  border: none;
  background: none;
  cursor: pointer;
}

.burger span {
  width: 20px;
  height: 2px;
  background: var(--text);
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}

.btn-primary {
  background: linear-gradient(to right, #22c55e, #4ade80);
  color: #022c22;
  box-shadow: 0 14px 35px rgba(34, 197, 94, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(34, 197, 94, 0.45);
}

.btn-secondary {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(148, 163, 184, 0.4);
  color: var(--text);
}

.btn-secondary:hover {
  background: rgba(15, 23, 42, 1);
}

.btn-outline {
  border-color: rgba(148, 163, 184, 0.4);
  background: transparent;
}

.btn-outline:hover {
  background: rgba(15, 23, 42, 0.95);
}

/* HERO */
.hero {
  padding: 80px 0 60px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2.4rem, 3vw, 3rem);
  line-height: 1.1;
  margin-bottom: 16px;
}

.accent {
  color: #4ade80;
}

.hero-subtitle {
  color: var(--text-muted);
  max-width: 620px;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.hero-bullets {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero-bullets li::before {
  content: "•";
  color: #4ade80;
  margin-right: 6px;
}

/* HERO CARD */
.hero-card {
  background: radial-gradient(circle at top, #1f2937, #020617 65%);
  border-radius: 26px;
  border: 1px solid rgba(148, 163, 184, 0.3);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero-card-header {
  padding: 18px 20px 12px;
  background: linear-gradient(to right, rgba(34, 197, 94, 0.16), transparent);
  border-bottom: 1px solid rgba(148, 163, 184, 0.22);
}

.hero-card-header h2 {
  font-size: 1.2rem;
}

.hero-card-body {
  padding: 18px 20px 6px;
  font-size: 0.95rem;
}

.hero-card-body p {
  color: var(--text-muted);
  margin-bottom: 14px;
}

.check-list {
  list-style: none;
  padding-left: 0;
}

.check-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 2px;
  font-size: 0.8rem;
  color: #4ade80;
}

.hero-card-footer {
  padding: 12px 20px 16px;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  background: radial-gradient(circle at bottom, #22c55e22, transparent 60%);
}

.small {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* CARDS GRID */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.card {
  background: radial-gradient(circle at top left, #111827, #020617);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.35);
  padding: 18px 18px 16px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.6);
  font-size: 0.95rem;
}

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

/* SOLUTION */
.solution-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: flex-start;
}

.highlight-box {
  background: radial-gradient(circle at top, var(--accent-strong), #020617);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(34, 197, 94, 0.5);
  padding: 20px 20px 18px;
  box-shadow: var(--shadow-soft);
}

.highlight-box h3 {
  margin-bottom: 10px;
}

.steps {
  list-style: none;
  padding-left: 0;
  margin-bottom: 10px;
}

.steps li {
  margin-bottom: 8px;
  font-size: 0.92rem;
}

/* FEATURES GRID */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.feature-column {
  background: radial-gradient(circle at top, #020617, #020617);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.35);
  padding: 18px;
  box-shadow: 0 14px 38px rgba(15, 23, 42, 0.7);
  font-size: 0.9rem;
}

.feature-column h3 {
  font-size: 1rem;
  margin-bottom: 10px;
}

.feature-column ul {
  padding-left: 16px;
  color: var(--text-muted);
}

/* PRICING */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.pricing-card {
  background: radial-gradient(circle at top, #020617, #020617);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.35);
  padding: 20px 20px 18px;
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.75);
  font-size: 0.9rem;
}

.pricing-card.highlight {
  border-color: rgba(34, 197, 94, 0.7);
  background: radial-gradient(circle at top, var(--accent-strong), #020617);
}

.pricing-card h3 {
  margin-bottom: 6px;
}

.price {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.price-sub {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.pricing-card ul {
  padding-left: 16px;
  color: var(--text-muted);
}

/* CONTACT / DEMO */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 26px;
}

.contact-form {
  background: radial-gradient(circle at top left, #111827, #020617);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.35);
  padding: 20px 20px 16px;
  box-shadow: var(--shadow-soft);
  font-size: 0.9rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.85rem;
}

input,
select,
textarea {
  width: 100%;
  padding: 9px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}

textarea {
  border-radius: 14px;
  resize: vertical;
  min-height: 120px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(34, 197, 94, 0.8);
  box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.6);
}

.form-message {
  margin-top: 8px;
  font-size: 0.86rem;
}

.form-message.success {
  color: #4ade80;
}

.form-message.error {
  color: #f97373;
}

.contact-info {
  font-size: 0.9rem;
}

.contact-info p {
  color: var(--text-muted);
  margin-bottom: 12px;
}

.contact-list {
  list-style: none;
  padding-left: 0;
  margin-bottom: 12px;
}

.contact-list li {
  margin-bottom: 4px;
}

/* FAQ */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.faq-item {
  background: radial-gradient(circle at top, #020617, #020617);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.35);
  padding: 16px 18px 14px;
  box-shadow: 0 12px 34px rgba(15, 23, 42, 0.7);
  font-size: 0.9rem;
}

.faq-item h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

/* LEGAL */
.legal {
  padding: 40px 0;
  background: #020617;
  border-top: 1px solid rgba(148, 163, 184, 0.25);
}

.legal.alt {
  background: #020617;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

.legal h2 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.legal p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* FOOTER */
.site-footer {
  padding: 32px 0 16px;
  background: #020617;
  border-top: 1px solid rgba(148, 163, 184, 0.25);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 26px;
  margin-bottom: 12px;
}

.footer-logo .logo-mark {
  padding: 5px 9px;
}

.footer-links {
  list-style: none;
  padding-left: 0;
  font-size: 0.88rem;
}

.footer-links li {
  margin-bottom: 4px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text);
}

.sub-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding-top: 10px;
  text-align: center;
}

/* LINKS */
a {
  color: #4ade80;
}

a:hover {
  text-decoration: underline;
}

/* RESPONSIVE */
@media (max-width: 960px) {
  .hero-grid,
  .solution-grid,
  .feature-grid,
  .cards-grid,
  .pricing-grid,
  .contact-grid,
  .faq-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 70px;
  }

  .hero-grid {
    gap: 28px;
  }

  .feature-column,
  .card,
  .pricing-card,
  .faq-item {
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.7);
  }
}

@media (max-width: 780px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    right: 16px;
    flex-direction: column;
    padding: 10px;
    background: rgba(15, 23, 42, 0.97);
    border-radius: 18px;
    border: 1px solid rgba(148, 163, 184, 0.3);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.9);
  }

  .main-nav.open {
    display: flex;
  }

  .burger {
    display: flex;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }

  .header-content {
    padding: 10px 0;
  }

  .section {
    padding: 60px 0;
  }
}