:root {
  --bg: #080b18;
  --bg-soft: #0f1430;
  --card: rgba(17, 24, 51, 0.75);
  --card-strong: rgba(24, 32, 68, 0.96);
  --text: #e8ebff;
  --muted: #aab4de;
  --primary: #63d3ff;
  --primary-2: #7a7cff;
  --border: rgba(136, 156, 255, 0.25);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at 10% 10%, #17234d 0%, #080b18 48%) no-repeat,
    linear-gradient(140deg, #070a16, #0f1531 45%, #0c0f1f);
  color: var(--text);
  scroll-behavior: smooth;
}

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

.container {
  width: min(1140px, 92vw);
  margin: 0 auto;
}

.bg-decoration {
  position: fixed;
  border-radius: 999px;
  filter: blur(70px);
  opacity: 0.45;
  z-index: -1;
}

.bg-decoration--one {
  width: 320px;
  height: 320px;
  top: 8%;
  right: 8%;
  background: #6274ff;
}

.bg-decoration--two {
  width: 260px;
  height: 260px;
  bottom: 10%;
  left: 6%;
  background: #4ad8f4;
}

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(132, 151, 255, 0.15);
  background: rgba(8, 11, 24, 0.7);
}

.header__inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.logo__mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #091020;
}

.logo__text {
  font-size: 18px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: #d8defe;
  font-size: 14px;
}

.nav a:hover {
  color: #fff;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 10px;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
}

.hero {
  padding: 84px 0 56px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 30px;
  align-items: stretch;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--primary);
  font-size: 13px;
  background: rgba(79, 178, 255, 0.08);
}

.hero h1 {
  margin: 18px 0 14px;
  line-height: 1.2;
  font-size: clamp(32px, 4.3vw, 52px);
  letter-spacing: 0.6px;
}

.hero h1 span {
  color: var(--primary);
}

.hero p {
  margin: 0;
  font-size: 16px;
  color: var(--muted);
  line-height: 1.8;
}

.hero__actions {
  margin-top: 28px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #081022;
  transition: 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(98, 150, 255, 0.35);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--border);
  color: #dce3ff;
}

.btn--small {
  padding: 8px 14px;
  border-radius: 10px;
}

.btn--block {
  width: 100%;
}

.link {
  color: #b8c2f7;
  font-size: 14px;
}

.link:hover {
  color: #fff;
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.hero__meta strong {
  display: block;
  font-size: 22px;
  color: #f4f6ff;
}

.hero__meta span {
  display: block;
  margin-top: 5px;
  color: #9aa7d8;
  font-size: 12px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.hero__panel {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero__panel h3 {
  margin: 0 0 18px;
  font-size: 20px;
}

.hero__panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.hero__panel li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px;
  border-radius: 12px;
  background: rgba(20, 28, 56, 0.75);
  border: 1px solid rgba(140, 158, 255, 0.18);
  gap: 12px;
}

.hero__panel span {
  color: #d4ddff;
  font-size: 14px;
}

.hero__panel b {
  color: #9ae1ff;
  font-size: 13px;
  text-align: right;
}

.section {
  padding: 68px 0;
}

.section__head {
  max-width: 760px;
  margin-bottom: 32px;
}

.section__sub {
  margin: 0 0 10px;
  color: #8bcfff;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.section h2 {
  margin: 0;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.25;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature {
  padding: 22px;
}

.feature h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.pricing {
  padding: 24px;
  position: relative;
}

.pricing h3 {
  margin: 0;
  font-size: 20px;
}

.pricing__price {
  font-size: 34px;
  margin: 10px 0 18px;
  font-weight: 700;
}

.pricing__price span {
  font-size: 14px;
  color: var(--muted);
  margin-left: 4px;
}

.pricing ul {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  color: #d2dbff;
  font-size: 14px;
}

.pricing--highlight {
  background: linear-gradient(160deg, rgba(66, 105, 255, 0.35), rgba(49, 204, 255, 0.2));
  border-color: rgba(117, 201, 255, 0.45);
}

.pricing__badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: #8fe6ff;
  color: #0c1230;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 700;
}

.download-wrap {
  padding: 30px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: center;
  background: var(--card-strong);
}

.download-wrap p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.download-actions {
  display: grid;
  gap: 12px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: start;
}

.contact-text {
  color: var(--muted);
  line-height: 1.8;
}

.contact-info {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 10px;
  color: #d7dfff;
}

.contact-info span {
  display: inline-block;
  width: 88px;
  color: #95a4da;
}

.contact-form {
  padding: 24px;
  display: grid;
  gap: 14px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-size: 13px;
  color: #d2dbff;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: rgba(5, 8, 20, 0.7);
  border: 1px solid rgba(133, 151, 244, 0.25);
  border-radius: 10px;
  color: var(--text);
  padding: 12px;
  font-size: 14px;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #85dcff;
  box-shadow: 0 0 0 3px rgba(133, 220, 255, 0.18);
}

.footer {
  border-top: 1px solid rgba(133, 151, 244, 0.18);
  padding: 18px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer p {
  margin: 0;
  color: #a3afdc;
  font-size: 13px;
}

.footer a {
  color: #a3afdc;
  font-size: 13px;
  margin-left: 16px;
}

@media (max-width: 1024px) {
  .hero__grid,
  .download-wrap,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-block;
  }

  .nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(9, 12, 25, 0.96);
    border-bottom: 1px solid rgba(133, 151, 244, 0.2);
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 4vw 22px;
    gap: 14px;
  }

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

  .hero {
    padding-top: 48px;
  }

  .hero__meta {
    grid-template-columns: 1fr;
  }

  .features-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}