* {
  box-sizing: border-box;
}

:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --text: #172033;
  --muted: #647087;
  --primary: #5b5cf0;
  --primary-dark: #4546d8;
  --border: #e4e7ef;
  --shadow: 0 18px 60px rgba(29, 39, 64, 0.10);
  --radius: 20px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 248, 252, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(228, 231, 239, 0.8);
}

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

.brand {
  font-weight: 800;
  font-size: 1.2rem;
}

.menu {
  display: flex;
  gap: 28px;
}

.menu a {
  color: var(--muted);
  font-weight: 600;
}

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

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
}

.hero {
  padding: 96px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 64px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(2.7rem, 7vw, 5.3rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.2rem;
}

p {
  color: var(--muted);
}

.hero p {
  max-width: 680px;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

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

.primary {
  background: var(--primary);
  color: white;
}

.primary:hover {
  background: var(--primary-dark);
}

.secondary {
  background: var(--surface);
  border-color: var(--border);
}

.hero-card {
  padding: 24px;
  border-radius: 32px;
  background: linear-gradient(145deg, #7374ff, #b8b9ff);
  box-shadow: var(--shadow);
}

.mock-window {
  overflow: hidden;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 20px 50px rgba(35, 36, 83, 0.2);
}

.mock-bar {
  display: flex;
  gap: 7px;
  padding: 14px;
  background: #eef0f6;
}

.mock-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #c9ceda;
}

.mock-content {
  padding: 30px;
}

.mock-line {
  height: 12px;
  margin-bottom: 12px;
  border-radius: 999px;
  background: #e8eaf2;
}

.mock-line.large {
  width: 74%;
  height: 20px;
  background: #c8c9ff;
}

.mock-line.short {
  width: 58%;
}

.mock-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 30px;
}

.mock-blocks div {
  aspect-ratio: 1;
  border-radius: 14px;
  background: #f1f2f8;
}

.section {
  padding: 88px 0;
}

.section.alt {
  background: var(--surface);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 38px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 34px rgba(29, 39, 64, 0.05);
}

.icon {
  width: 44px;
  height: 44px;
  margin-bottom: 20px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: #ededff;
  color: var(--primary);
  font-weight: 900;
}

.split,
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fbfcff;
  padding: 13px 14px;
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(91, 92, 240, 0.1);
}

.contact-form textarea {
  resize: vertical;
}

.form-status {
  min-height: 24px;
  margin: 0;
  font-size: 0.92rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-content {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 800px) {
  .menu-toggle {
    display: block;
  }

  .menu {
    position: absolute;
    top: 72px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

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

  .hero {
    padding-top: 64px;
  }

  .hero-grid,
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

  .footer-content {
    padding: 22px 0;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  h1 {
    font-size: clamp(2.5rem, 14vw, 4rem);
  }

  .section {
    padding: 68px 0;
  }

  .hero-card {
    padding: 14px;
  }
}