:root {
  --bg: #f4f8ff;
  --bg-soft: #ffffff;
  --card: #eef4ff;
  --primary: #1e9ed8;
  --primary-dark: #157fb0;
  --text: #1b2a44;
  --muted: #5f7090;
  --border: #d7e0ee;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(244, 248, 255, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.menu {
  display: flex;
  gap: 1.2rem;
  color: var(--muted);
}

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

.menu-btn {
  display: none;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 10px;
  font-size: 1.1rem;
}

.hero {
  padding: 5.2rem 0 4rem;
  background:
    radial-gradient(circle at 10% 20%, rgba(30, 158, 216, 0.16), transparent 35%),
    radial-gradient(circle at 90% 15%, rgba(125, 154, 255, 0.2), transparent 30%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
}

.kicker {
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 1.2px;
  font-size: 0.82rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 0.4rem 0 1rem;
}

h2 {
  font-size: clamp(1.45rem, 3.4vw, 2.3rem);
  margin: 0 0 0.8rem;
}

.subtitle,
.section-sub {
  color: var(--muted);
  line-height: 1.65;
  max-width: 680px;
}

.hero-actions {
  margin-top: 1.7rem;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 700;
  padding: 0.8rem 1.15rem;
  border: 1px solid transparent;
  transition: 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #46b9eb);
  color: #ffffff;
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #2dabe2, #5cc3ef);
}

.btn-secondary {
  border-color: var(--border);
  background: #ffffff;
  color: var(--text);
}

.btn-secondary:hover {
  background: #f1f6ff;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.2rem;
}

.badges span {
  border: 1px solid var(--border);
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.86rem;
}

.hero-card {
  background: linear-gradient(160deg, #ffffff, #f4f8ff);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.2rem 1.3rem;
}

.hero-card h3 {
  margin-top: 0.2rem;
}

.hero-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.8;
}

.section {
  padding: 4.2rem 0;
}

.grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
}

.card p {
  color: var(--muted);
  line-height: 1.6;
}

.section-dark {
  background: linear-gradient(180deg, #edf4ff, #f6f9ff);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.split {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.ia-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.ia-list li {
  border: 1px solid var(--border);
  background: #ffffff;
  border-radius: 10px;
  padding: 0.8rem;
}

.pricing {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.4rem;
}

.plan {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem;
  background: #ffffff;
}

.plan ul {
  color: var(--muted);
  line-height: 1.8;
  padding-left: 1rem;
}

.price {
  font-size: 1.8rem;
  font-weight: 800;
  margin: 0.3rem 0 0.5rem;
}

.price span {
  font-size: 1rem;
  color: var(--muted);
  font-weight: 600;
}

.featured {
  outline: 2px solid var(--primary-dark);
  position: relative;
}

.tag {
  position: absolute;
  right: 12px;
  top: -10px;
  background: var(--primary-dark);
  color: #ffffff;
  font-weight: 700;
  border-radius: 999px;
  padding: 0.25rem 0.62rem;
  font-size: 0.74rem;
}

.form-wrap {
  display: grid;
  gap: 1.6rem;
  grid-template-columns: 1fr 1fr;
}

.form {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
  display: grid;
  gap: 0.75rem;
}

.form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.92rem;
}

.form input,
.form select {
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
  border-radius: 10px;
  padding: 0.72rem;
}

.btn-full {
  width: 100%;
  margin-top: 0.3rem;
}

.form-message {
  min-height: 20px;
  color: #74e28a;
  font-weight: 600;
  margin: 0;
}

.footer {
  border-top: 1px solid var(--border);
  padding: 1.2rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  flex-wrap: wrap;
}

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

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

  .menu {
    display: none;
    position: absolute;
    top: 72px;
    right: 4%;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.8rem;
    flex-direction: column;
    min-width: 190px;
  }

  .menu.open {
    display: flex;
  }
}