:root {
  --bg: #060816;
  --bg-soft: #0c1230;
  --primary: #52e5ff;
  --primary-2: #a86bff;
  --text: #eef4ff;
  --muted: #b9c2dd;
  --card: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at 15% 20%, #1b2668 0%, transparent 40%),
    radial-gradient(circle at 80% 10%, #3a166e 0%, transparent 45%),
    linear-gradient(180deg, var(--bg) 0%, #04050d 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

.bg-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 38%, transparent 100%);
  opacity: 0.4;
}

.glow {
  position: fixed;
  width: 360px;
  height: 360px;
  filter: blur(70px);
  z-index: 1;
  pointer-events: none;
}

.glow-a {
  top: -120px;
  right: -100px;
  background: rgba(82, 229, 255, 0.2);
}

.glow-b {
  bottom: -120px;
  left: -80px;
  background: rgba(168, 107, 255, 0.2);
}

.site-header,
main,
.site-footer {
  width: min(1100px, 92vw);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 0;
  gap: 18px;
}

.logo {
  font-weight: 800;
  letter-spacing: 1px;
  font-size: 1.2rem;
}

.logo span {
  color: var(--primary);
}

nav {
  display: flex;
  gap: 24px;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  font-size: 1.1rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

nav a:hover {
  color: white;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: 11px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  color: #091021;
  border: none;
  box-shadow: 0 10px 30px rgba(98, 171, 255, 0.35);
  font-weight: 700;
}

.btn.ghost:hover {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(82, 229, 255, 0.15);
}

.hero {
  padding: 72px 0 40px;
}

.tag {
  display: inline-block;
  color: var(--primary);
  border: 1px solid rgba(82, 229, 255, 0.4);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.92rem;
}

h1 {
  margin: 18px 0 14px;
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  line-height: 1.15;
}

.subtitle {
  color: var(--muted);
  max-width: 700px;
  line-height: 1.8;
}

.hero-actions {
  margin-top: 26px;
  display: flex;
  gap: 14px;
}

.metrics {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 16px;
}

.metrics div {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  backdrop-filter: blur(10px);
}

.metrics strong {
  display: block;
  font-size: 1.5rem;
}

.metrics span {
  color: var(--muted);
  font-size: 0.9rem;
}

.panel {
  margin-top: 32px;
  padding: 30px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  backdrop-filter: blur(8px);
}

.panel h2 {
  margin-top: 0;
}

.cards,
.cases {
  display: grid;
  grid-template-columns: repeat(3, minmax(160px, 1fr));
  gap: 16px;
}

.cards article,
.case-card {
  background: rgba(5, 14, 39, 0.72);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

.cards h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.cards p,
.case-card span {
  color: var(--muted);
  line-height: 1.65;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.steps li {
  background: rgba(5, 14, 39, 0.72);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.steps span {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-grid;
  place-content: center;
  background: linear-gradient(120deg, var(--primary), var(--primary-2));
  color: #091021;
  font-size: 0.8rem;
  font-weight: 700;
}

.pricing {
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 16px;
}

.price-card {
  background: rgba(5, 14, 39, 0.72);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}

.price-card h3 {
  margin: 8px 0 10px;
}

.price-card strong {
  display: block;
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.plan {
  margin: 0;
  letter-spacing: 1px;
  color: var(--primary);
  font-size: 0.84rem;
}

.price-card ul {
  margin: 0 0 16px;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.price-card.featured {
  border-color: rgba(82, 229, 255, 0.8);
  box-shadow: 0 10px 35px rgba(82, 229, 255, 0.16);
}

.lead-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.lead-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 10px;
  padding: 12px;
  font: inherit;
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  outline: 1px solid rgba(82, 229, 255, 0.8);
  border-color: rgba(82, 229, 255, 0.8);
}

.lead-form .full {
  grid-column: 1 / -1;
}

.form-tip {
  min-height: 24px;
  color: var(--primary);
}

.site-footer {
  margin-top: 52px;
  margin-bottom: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(12, 18, 48, 0.8);
}

.footer-content h3 {
  margin: 0 0 8px 0;
}

.footer-content p,
.copyright {
  color: var(--muted);
}

.footer-contact {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.footer-contact h3 {
  margin: 0 0 16px 0;
  font-size: 1.1rem;
}

.footer-contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 300px);
  gap: 28px 40px;
  align-items: start;
}

.footer-site-privacy {
  margin: 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(5, 14, 39, 0.45);
}

.footer-site-privacy h4 {
  margin: 0 0 12px 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  color: rgba(230, 236, 255, 0.96);
}

.footer-site-privacy-link {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
}

.footer-site-privacy-link:hover {
  text-decoration: underline;
}

.contact-details {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 20px;
  margin: 0;
  font-size: 0.95rem;
}

.contact-details dt {
  margin: 0;
  color: var(--muted);
  font-weight: 500;
}

.contact-details dd {
  margin: 0;
  color: rgba(230, 236, 255, 0.92);
  line-height: 1.55;
}

.contact-details a {
  color: var(--primary);
  text-decoration: none;
}

.contact-details a:hover {
  text-decoration: underline;
}

.copyright {
  margin: 16px 0 0 0;
  font-size: 0.95rem;
}

.footer-contact + .copyright {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  nav {
    display: none;
    position: absolute;
    top: 72px;
    right: 0;
    width: min(260px, 80vw);
    background: rgba(9, 12, 31, 0.95);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 12px;
    flex-direction: column;
    gap: 10px;
    backdrop-filter: blur(12px);
  }

  nav.open {
    display: flex;
  }

  .menu-toggle {
    display: inline-grid;
    place-content: center;
  }

  .desktop-only {
    display: none;
  }

  .cards,
  .cases,
  .metrics,
  .pricing,
  .lead-form {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-wrap: wrap;
  }

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